by
Tom Gurney BSc (Hons) is an art history expert with over 20 years experience

Email: tomgurney1@gmail.com / Phone: +44 7429 011000

From Temple Orders to Skyscraper Crowns: How Architectural Styles Travel and Return

Architectural styles are useful because they give us a language for patterns. A pointed arch, a regular classical façade or a stepped geometric crown can connect a building to particular design traditions. Yet style is not a date printed on stone. Buildings are extended, repaired and refaced; old forms return centuries later; the same name can mean different things in different places. The best identification begins with several clues working together.

Sandstone gateway and plant-capital columns of the Temple of Dendur inside The Metropolitan Museum of Art.
Dendur’s sandstone temple and gateway in their present museum setting in New York. Photographer not identified; image provided by The Metropolitan Museum of Art, Temple of Dendur, The Metropolitan Museum of Art, 68.154; CC0. JPEG prepared; no crop or retouch.

This guide follows fifteen traditions covered in depth by this architecture section. Its path is especially concerned with European and transatlantic histories and their wider exchanges. It is not a claim to contain every architectural tradition. A genuinely global history has many simultaneous centres, routes of transmission and local chronologies, as the breadth of Smarthistory's global architecture syllabus makes clear. [4]

At a Glance

  • Best first testCombine overall form, structure, material, plan and ornament; one decorative feature rarely identifies a style securely.
  • DatesTreat every range as approximate and regional. Styles overlap, persist and return in revivals.
  • AlterationSeparate original fabric from later additions, repairs and façade recasting before naming the whole building.
  • Strong comparisonRomanesque and Gothic are best distinguished by the complete load path, not round versus pointed arches alone.
  • ScopeThis is a focused route through the specialist styles in the section, not a complete map of world architecture.

Contents

  1. All Architecture Style Guides
  2. What Makes an Architectural Style?
  3. How to Read the Timeline
  4. Read the Building as Evidence
  5. Recommended Books
  6. Styles from Ancient Egypt to Art Deco
  7. Romanesque and Gothic Videos
  8. Five Comparisons
  9. Frequently Asked Questions

Explore All Architecture Style Guides

Choose a style guide for its chronology, defining evidence, representative buildings and relationships with later revivals.

What makes an architectural style?

A style is a classification based on recurring relationships among form, construction, materials, plan, proportion and ornament. It may also be associated with a place, culture, patronage system or period. Getty's Art & Architecture Thesaurus places “styles and periods” within a controlled vocabulary alongside physical attributes, materials, activities and objects. [1] Its guidance also allows concepts to have multiple parents or related terms. [2] That is a helpful model for buildings: a work can belong to more than one historical conversation.

Start at the largest scale. Is the building a compact block, a long basilica, a centralised domed space, an irregular picturesque composition or a vertical tower? Then ask how it stands. Posts and lintels, thick load-bearing walls, skeletal piers and buttresses, iron frames and reinforced concrete produce different possibilities. Look next at openings, supports, roofline, surface, materials and plan. Function and setting matter too. A temple, palace, station and apartment building may use related details for very different purposes.

No single clue is conclusive. Round arches did not disappear when the Romanesque period ended, and pointed arches were deliberately revived in the nineteenth century. Classical columns recur from antiquity through the Renaissance, Neoclassicism and beyond. UNESCO's account of heritage attributes likewise treats form and design alongside materials, use, function, techniques, location and setting. [3] Good visual reading assembles evidence instead of matching one decorative feature to a label.

How to read the timeline

The dates in this guide are approximate and region-dependent. Styles overlap because buildings take years to make, traditions persist, patrons choose among alternatives and ideas travel unevenly. Historians also name some styles long after the buildings were made. “Gothic” and “Romanesque,” for example, are later classifications, not labels uniformly used by medieval builders.

Revival complicates the picture further. Renaissance architects studied and transformed ancient forms; eighteenth- and nineteenth-century designers made new classical selections; Victorian architects could choose Gothic, Italianate, Tudor or other historical languages. The result is not a relay race in which one style ends the moment another begins. It is closer to a braided history of inheritance, rejection, recovery and adaptation.

Use the profiles below as routes into that history. Each gives a broad range, the strongest recognition clues, an example and a likely source of confusion. The detailed articles examine regional variants, structures, architects and buildings more closely.

Approximate region-dependent overlap map of fifteen architecture styles, with dashed revival connections.
Overlapping bands resist a single-file chronology; dashed lines mark revival or reuse. Dates are approximate and region-dependent. Every band is repeated in the profiles below.

Read the building as evidence

Begin by separating what belongs to the first campaign from what may have changed. A blocked doorway, a different masonry bond, a shifted roofline or windows cutting across an older arrangement can reveal adaptation. A façade may have been recast while the plan and structure behind it survived. Conversely, apparently old ornament may have been added during a revival. Conservation records, measured surveys, maps and dated drawings can therefore overturn a quick visual impression.

Function provides another check. Structural and spatial choices respond to what a building was made to do: gather a congregation, organise a court, move passengers, display government or house a family. A Gothic cathedral and a Gothic Revival railway hotel can share pointed arches while differing radically in construction, plan and historical purpose. The label becomes more precise when it follows this evidence rather than replacing it.

Material needs the same care. Stone, brick, timber, iron and concrete are not exclusive signatures of a style. Their availability, cost, labour traditions and later repair vary from place to place. A rendered wall can hide brick; a stone facing can conceal a modern frame. Even colour may belong to weathering or restoration rather than the original design.

Finally, test the scale of the claim. It may be possible to identify one wing as Gothic Revival without assigning the whole multi-period complex to that style. It may be safer to say that a building has Neoclassical features than to give it a firm Neoclassical date. Architectural classification is strongest when it records degrees of confidence and leaves visible what the evidence cannot settle.

Ancient Egyptian architecture

Read the full Ancient Egyptian architecture guide for chronology, materials, temples, funerary complexes and domestic evidence.

The architecture of dynastic Egypt spans roughly three millennia, from about 3100 BCE to the Roman annexation in 30 BCE. Monumental survival strongly favours stone temples and tombs, while domestic buildings made from more perishable materials are less visible. That imbalance matters: pyramids do not describe the whole built environment.

Egyptian sacred architecture often directs movement along an axis through gateways, courts and increasingly restricted spaces. Monumental walls may have a slight inward slope, while columned halls create dense rhythms of supports. Form, image, inscription, ritual and landscape work together. The Metropolitan Museum of Art's educator resource uses the Temple of Dendur to connect durable stone, sacred purpose and architectural organisation. [5]

The quickest clues are mass, axial procession, battered wall faces, monumental gateways and columns whose capitals may draw on plant forms. But identify a building through its date, site and function as well as its silhouette. Later Egyptianising architecture elsewhere deliberately borrowed these signs.

Ancient Greek architecture

Read the full Ancient Greek architecture guide for temple anatomy, orders, civic forms, colour and regional development.

Ancient Greek architecture developed across the Greek world from the early first millennium BCE and continued through Hellenistic kingdoms before Roman rule. The temple remains its most familiar image: a post-and-lintel structure organised by columns, entablature and pediment. Doric and Ionic systems regulate far more than capital shape, coordinating proportions and parts across the building.

Greek architecture was not only temples. Theatres, stoas, council houses, stadiums and planned sanctuaries shaped civic and social life. Smarthistory's introduction stresses this range and the way Greek architectural ideas were taken up by Rome. [6] The Parthenon is a powerful Doric example, but it should not stand for every region, period or building type.

Look for a legible post-and-lintel order, carefully related proportions and an exterior colonnade. Then distinguish an ancient building from a later classical revival. Freshness of stone is no guide: archaeological setting, construction history and documentary evidence are essential.

Fluted Doric columns and the stone entablature on the west side of the Parthenon.
The west side of the Parthenon, photographed in 2006, with restoration scaffolding visible behind the colonnade. User:Mountain, Parthenon from west; Public domain. JPEG prepared; no crop or retouch.

Roman architecture

Read the full Roman architecture guide for concrete, arches, vaults, domes, infrastructure and urban building types.

Roman builders absorbed Greek and Etruscan traditions while exploiting new materials and structural systems across a vast empire. From roughly the third century BCE through late antiquity, concrete, true arches and vaults made it possible to shape large interiors and infrastructure at a new scale. Temples remained important, but basilicas, baths, amphitheatres, apartment blocks, markets and aqueducts make Roman architecture unusually diverse. [7]

The Pantheon brings inheritance and innovation together. Its columned portico speaks in a classical language, while a brick-faced concrete rotunda and graded concrete dome enclose an immense geometric volume. Smarthistory also cautions that familiar claims about its exact date and original function remain debated. [8] A famous example can be structurally clear and historically uncertain at the same time.

Look for arches, barrel and groin vaults, domes, thick concrete or masonry masses and an emphasis on interior volume. Classical orders may articulate a surface without carrying its principal load. Greek-looking detail alone does not make a building Greek—or ancient.

Concentric rows of recessed coffers around the bright circular oculus of the Pantheon dome.
The coffered dome and central oculus of the Pantheon in Rome, photographed in 2019. T. Le Berre, Interior oculus of the Rome Pantheon; CC BY-SA 4.0. JPEG prepared; no crop or retouch.

Byzantine architecture

“Byzantine” conventionally describes the medieval eastern Roman Empire and related cultural spheres from late antiquity until Constantinople fell in 1453. It covers many regions and more than a thousand years, so no single plan or dome defines it. Churches could be longitudinal, centralised or combinations of both; masonry, vaults, mosaics and controlled light shaped their interiors.

Hagia Sophia, built in Constantinople in 532–537 by Anthemius of Tralles and Isidore of Miletus, is the central comparison. Its dome rises above an extraordinarily complex supporting system, while windows around the dome's base help light weaken the visual sense of weight. [9] Its later history as church, mosque, museum and mosque again is also a warning against treating a surviving building as one frozen moment.

Domed central space, curved vaulting, luminous interiors and mosaic surfaces are useful clues, but they are not exclusive. Compare plan and support carefully, and remember that “Byzantine” architecture continued Roman building knowledge while developing distinct religious and imperial settings.

Central dome and smaller domed roofs of Hagia Sophia, surrounded by four slender minarets.
Hagia Sophia in 2013: its domed massing is seen alongside later Ottoman minarets and additions. Arild Vågen, Hagia Sophia, March 2013; CC BY-SA 3.0. JPEG prepared; no crop or retouch.

Romanesque architecture

Romanesque is a later name for architecture and art produced in much of western Europe chiefly during the eleventh and twelfth centuries. It does not describe one uniform international formula. Smarthistory emphasises marked regional difference and notes that Gothic appeared around Paris by the mid-twelfth century while Romanesque traditions continued elsewhere. [10]

Many major churches have thick masonry, round arches, strongly articulated bays, towers and sculpted portals. Vaulting could replace or coexist with timber roofs. The weight and rhythm of piers often remain visually emphatic. Durham Cathedral is especially useful because its early rib vaults complicate any tidy opposition in which Romanesque is merely heavy and Gothic suddenly inventive.

Round-headed openings, robust wall masses and repeated bays are strong first clues. They are not a date test. Roman construction, later Romanesque Revival and ordinary structural necessity can all produce round arches. Context separates them.

Patterned stone piers and round arcades supporting the rib-vaulted nave of Durham Cathedral.
Durham Cathedral’s nave in 2019, showing patterned piers, round arcades and rib vaults together. Later fittings remain visible. Michael D Beckwith, Durham Cathedral nave; CC0. JPEG prepared; no crop or retouch.

Gothic architecture

Gothic architecture emerged in twelfth-century northern France and developed across Europe in varied regional phases into the later Middle Ages. The name was imposed retrospectively and originally carried a dismissive judgement. Structurally, the combination of pointed arches, rib vaults and external buttressing allowed loads to be concentrated and resisted while walls opened to larger windows. [11]

At Chartres Cathedral, vertical piers, ribbed vaulting, flying buttresses and stained glass form an interconnected system rather than a bag of decorative motifs. Yet not every Gothic building uses every feature, and cathedrals are not the only type. Parish churches, halls, colleges, houses and civic buildings translate the language at different scales.

Look for a skeletal division into bays, pointed profiles, vertical continuity, tracery and a close relationship between structure and light. Then ask whether the work is medieval or a later Gothic Revival. Nineteenth-century builders used the language for churches, schools, stations and institutions with modern programmes and technologies.

Rows of stone buttresses and tall traceried windows along the north side of Chartres Cathedral.
The north nave elevation of Chartres Cathedral, showing buttresses and large windows in 2007. Andreas F. Borchert, Chartres Cathedral Buttresses N 2007 08 31; CC BY-SA 4.0. JPEG prepared; no crop or retouch.

Watch: Romanesque or Gothic?

Choose either side of the guide's most important structural comparison. Both videos examine real buildings with Smarthistory's Dr Steven Zucker and Dr Beth Harris.

Renaissance architecture

Renaissance architecture began in fifteenth-century Italy and developed through the sixteenth century in multiple regional forms. Its makers studied ancient Roman ruins and texts, but the result was selective reinvention rather than archaeological copying. Geometric planning, proportional relationships, classical orders, round arches, domes and carefully composed façades became prominent.

Brunelleschi's dome for Florence Cathedral is a revealing transition. It crowns a Gothic church, uses an octagonal double-shell solution and reflects sustained attention to ancient domes without simply reproducing the Pantheon. [12] Renaissance identity can therefore lie in a new intellectual and formal approach applied to an inherited project.

Look for measured bays, clear geometric units, classical columns or pilasters, rustication, round arches and proportional coordination. These clues also appear in later Renaissance Revival buildings. Date, construction system and relationship to archaeological knowledge help distinguish the phases.

Terracotta dome and lantern behind Florence Cathedral’s patterned exterior, beside the tall bell tower.
Brunelleschi’s dome rises behind the cathedral exterior and Giotto’s bell tower in Florence, photographed in 2024. Mariordo, Brunelleschi’s dome and Giotto’s bell tower, Florence; CC BY-SA 4.0. JPEG prepared; no crop or retouch.

Baroque architecture

Baroque architecture developed during the seventeenth century and continued into the eighteenth across Catholic Rome, European courts, Protestant regions and colonial settings. It is often described as dramatic, but drama can come from spatial sequence, geometry, light and controlled viewing as much as lavish ornament.

Borromini's small Roman church of San Carlo alle Quattro Fontane, begun in 1638, makes walls advance and recede through disciplined geometry. Columns, curves and the oval dome create a sense of movement without relying on sheer size. [13] Other Baroque works can be comparatively restrained, axial or classically severe.

Look for spaces that unfold, curved or intersecting geometries, emphatic axes, light staged for effect and an integration of architecture with painting, sculpture or landscape. Avoid equating every ornate building with Baroque. Rococo, regional classicisms and later Neo-Baroque revivals require their own context.

Cross-shaped and polygonal coffers above an ornamented curved cornice and window at San Carlo alle Quattro Fontane.
Geometric coffering and a curved cornice inside San Carlo alle Quattro Fontane in Rome, photographed in 2019. Oursana, San Carlo alle Quattro Fontane, dome above altar, detail; CC0. JPEG prepared; no crop or retouch.

Neoclassical architecture

Neoclassicism gathered force from the mid-eighteenth century as architects and patrons made newly archaeological, moral and political claims for ancient forms. It lasted well into the nineteenth century and, in civic architecture, beyond. Its boundaries overlap Palladian design, Georgian practice, Greek Revival and other classicisms.

Chiswick House, built in 1726–1729, shows why the transition cannot be reduced to a date. Richard Boyle and William Kent drew on Palladio and ancient Roman architecture, including the Pantheon, while presenting their work as a stripping away of Baroque excess. [14] The result is both part of a long classical chain and a particular eighteenth-century selection.

Look for lucid geometry, temple fronts, columns, pediments, domes, restrained planar walls and deliberate reference to Greek or Roman sources. But “classical” is broader than “Neoclassical.” Establish when, where and why the reference was made.

Georgian architecture

“Georgian” first names the British period associated with George I through George IV, 1714–1830. It is also used for architecture in Britain, Ireland and other connected regions during that frame. Historic England summarises its strong association with classical proportion, balance, symmetry, regular windows and often a centred entrance. [15]

Those features are useful, but Georgian is not a single sealed style. Baroque, Palladian, vernacular and Neoclassical tendencies coexist, and urban terraces differ from country houses. Repeated façades can make a street or square into an architectural composition larger than one dwelling.

Look for regular bays, proportional hierarchy between floors, sash windows, restrained classical doorcases and coordinated terraces. Do not date a house from symmetry alone. Later Neo-Georgian work deliberately reused the language, while surviving Georgian buildings often contain Victorian or modern alteration.

Victorian architecture

Victorian describes the reign of Queen Victoria, 1837–1901, not one style. The period saw Gothic, Italianate, Romanesque, Queen Anne, classical and vernacular revivals alongside iron-and-glass engineering, railway architecture, new civic institutions and rapidly expanding suburbs. Pattern books and a growing profession helped circulate options.

Historic England's domestic guide traces how classical preferences continued while picturesque Gothic, Italianate and vernacular modes multiplied; by the later nineteenth century Domestic Revival and Arts and Crafts work complicated the field further. [16] Mumbai shows another dimension: Victorian Gothic public buildings incorporated Indian elements and climate-responsive balconies and verandas within a colonial city. [21]

The correct recognition clue is therefore eclectic possibility, not a standard “Victorian look.” Identify the specific revival, material technology, building type and regional history within the period. St Pancras in London, for example, joins a Gothic Revival hotel frontage to the engineering world of a great iron train shed.

Queen Anne architecture

Queen Anne is one of the clearest warnings that style names travel. In Britain, the nineteenth-century Queen Anne Revival looked back selectively to late seventeenth- and early eighteenth-century domestic architecture. Richard Norman Shaw's work helped make red brick, moulded detail, prominent gables, tall chimneys and picturesque asymmetry influential. Historic England describes Lowther Lodge and Bedford Park within this Domestic Revival context. [16] [17]

In the United States, Queen Anne became more exuberant between about 1880 and 1910. The National Park Service identifies irregular plans, intersecting roofs, varied wall materials, patterned shingles, porches, turrets and mass-produced wooden ornament, while noting that the name is historically imprecise. [18]

Ask which Queen Anne is meant. British red-brick domestic revival and American surface-rich houses are related through transatlantic exchange, not identical. Neither is a transparent recreation of buildings erected during Queen Anne's reign.

Tudor architecture and Tudor Revival

Original Tudor architecture belongs to England and Wales under the Tudor dynasty, 1485–1603, when late medieval forms met Renaissance ideas. Great houses and palaces might use brick, gatehouses, courtyards, tall decorated chimneys, large windows and elaborate timber roofs. Smaller domestic buildings varied by region and resources; exposed timber framing is only one possibility.

Hampton Court Palace began with Cardinal Wolsey in the early sixteenth century and was expanded by Henry VIII, but its present fabric also includes major Baroque rebuilding for William III and Mary II. [19] It should be read as a layered site, not a pure Tudor specimen.

Tudor Revival, including work called Tudorbethan, returned to selected gables, chimneys, mullioned windows and applied or structural timbering during the nineteenth and early twentieth centuries. Materials, plan and documentary date distinguish revival from original fabric. This guide keeps both within one route because the comparison is essential: surface “black and white” effects alone cannot authenticate age.

Art Nouveau architecture

Art Nouveau architecture flourished around the turn of the twentieth century, with major regional variants and names. It sought new relationships among structure, space, craft and modern materials. Curving plant-like line is familiar, but reducing the movement to floral decoration misses its architectural ambition.

UNESCO's four Horta town houses in Brussels show open planning, transformed natural light, iron and glass, and decoration whose curves are integrated with the building's structure. [20] At the Hôtel Tassel, circulation and interior detail become one continuous composition. Other designers, including Hector Guimard and Antoni Gaudí, developed markedly different vocabularies.

Look for coordinated architecture and applied arts, inventive metalwork, flowing or geometric line, new handling of light and a rejection of routine historical copying. For broader painting, design and cultural context, see Art Nouveau. The architecture page remains concerned with buildings, materials, plans and spatial experience.

Curving iron railings and a projecting central window bay on the stone façade of Hôtel Tassel.
The Hôtel Tassel façade in Brussels, with a projecting glazed centre and decorative ironwork, photographed in 2007. Karl Stas, Hôtel Tassel, Brussels; CC BY-SA 3.0. JPEG prepared; no crop or retouch.

Art Deco architecture

Art Deco became internationally prominent in the 1920s and 1930s and continued into the 1940s in some regions. It embraced geometric ornament, stepped profiles, vertical accents, luxurious craft and modern materials; streamlined variants could emphasise horizontal motion and rounded corners. Building type matters: skyscrapers, cinemas, apartment blocks and civic buildings offered different expressions.

The Chrysler Building's stainless-steel crown, triangular windows and automobile imagery made corporate modernity visible in New York. [22] GSA's guide distinguishes hard-edged, vertically stressed Art Deco from the smoother, horizontal tendencies of Moderne in American public architecture. [23] Across Mumbai, cinemas and residences combined Deco imagery with Indian design, climate and urban planning to create what UNESCO calls Indo-Deco. [21]

Look for controlled geometric relief, setbacks, repeated verticals, stylised natural or machine motifs and a deliberate dialogue between craft and industrial materials. Art Deco is not simply any interwar geometry. For the wider movement across art and design, see Art Deco.

Rounded balconies and rows of windows on the Moonlight apartment building beside a busy Mumbai street.
Moonlight near Mumbai’s Oval Maidan in 2024, showing rounded corner balconies within the city’s Art Deco ensemble. DesiBoy101, Moonlight building near Oval Maidan, Mumbai; CC BY 4.0. JPEG prepared; no crop or retouch.

Five comparisons that prevent common mistakes

Greek and Roman: Greek temples make post-and-lintel order especially legible; Roman builders extended classical language while using concrete, arches, vaults and domes to shape large interiors. A Roman building can look Greek at its portico and be structurally unlike it behind.

Romanesque and Gothic: round versus pointed arch is useful but incomplete. Compare the whole load path: wall mass and bay rhythm against concentrated supports, ribbed vaults and external buttressing. Transitional buildings can contain evidence of both.

Renaissance, Baroque and Neoclassical: all draw on classical architecture. Renaissance work often foregrounds measured proportional order; Baroque designers manipulate that language through sequence and movement; Neoclassicism makes later, often archaeologically informed selections. These are tendencies, not automatic diagnoses.

Georgian and Victorian: these are chronological frames. Georgian architecture is strongly associated with classical regularity, while Victorian practice is notably plural, but neither label guarantees a single appearance. A later Victorian building can deliberately look Georgian.

Art Nouveau and Art Deco: Art Nouveau often seeks continuous integration through line, structure and craft; Art Deco favours controlled geometry, facets, steps and stylised imagery. Both vary by region and overlap with other early modern tendencies.

Frequently asked questions

Rarely. A pointed arch, half-timbered gable or classical column can be original, revived, repaired or newly applied. Use several physical clues, the building's function and setting, and documentary evidence.

New ideas spread unevenly, older building practices persist, and patrons can choose among alternatives. Historians also define ranges retrospectively. An overlap is evidence of real historical complexity, not a flaw in the timeline.

A style describes a formal and historical language; a building type groups works by purpose or recurring organisation. A cathedral is a building type and may be Romanesque, Gothic, Baroque or something else. Start with the Architecture guide to see how styles, elements and types relate.

Record the mixture. Different campaigns may belong to different dates, or one architect may have combined references deliberately. Hampton Court's Tudor and Baroque work is more informative when both are named.

No. It is a focused pathway through the styles developed as specialist pages in this section. Other architectural histories unfold concurrently across Africa, Asia, the Americas, Oceania and Indigenous traditions. A useful guide states its boundaries rather than turning every other tradition into an appendix.

Discussion

Choose a building whose style seems obvious, then test that first impression against structure, material, date, place and alteration.

Reader Insights

Strongest clue

Which combination of features supports the style label more securely than any single arch, column or ornament?

Possible confusion

Which revival, neighbouring period or regional variant could produce a similar appearance?

Change over time

Which addition, repair or reused feature most complicates the building's classification?

Join the Conversation

Share a documented example or a reliable source below, keeping observation separate from inference.

References

  1. Getty Vocabulary Program, “AAT, the Art & Architecture Thesaurus: Brief Introduction and Indexing.” View source
  2. Patricia Harpring, Introduction to Controlled Vocabularies: Terminologies for Art, Architecture, and Other Cultural Works. Getty Research Institute. View source
  3. UNESCO World Heritage Centre, “Attributes — Questions and Answers.” View source
  4. Smarthistory, “Global History of Architecture Syllabus.” View source
  5. Metropolitan Museum of Art, The Art of Ancient Egypt: A Resource for Educators. View source
  6. Smarthistory, “Ancient Greek architecture, an introduction.” View source
  7. Smarthistory, “Ancient Roman architecture, an introduction.” View source
  8. Smarthistory, “The Pantheon, Rome.” View source
  9. Smarthistory, “Hagia Sophia, Istanbul.” View source
  10. Smarthistory, “Romanesque art, an introduction.” View source
  11. Smarthistory, “Gothic architecture, an introduction.” View source
  12. Smarthistory, “Filippo Brunelleschi, Dome of the Cathedral of Florence.” View source
  13. Smarthistory, “Francesco Borromini, San Carlo alle Quattro Fontane, Rome.” View source
  14. Smarthistory, “Richard Boyle with William Kent, Chiswick House.” View source
  15. Historic England, “Glossary for the Early Georgian Townhouse Walking Tour.” View source
  16. Historic England, Domestic 3: Suburban and Country Houses — Listing Selection Guide. View source
  17. Historic England, Domestic 2: Town Houses — Listing Selection Guide. View source
  18. U.S. National Park Service, “Queen Anne Style 1880s–1910.” View source
  19. Historic Royal Palaces, “The story of Hampton Court Palace.” View source
  20. UNESCO World Heritage Centre, “Major Town Houses of the Architect Victor Horta (Brussels).” View source
  21. UNESCO World Heritage Centre, “Victorian Gothic and Art Deco Ensembles of Mumbai.” View source
  22. Metropolitan Museum of Art, “Chrysler Building,” The Metropolitan Museum of Art Bulletin 29, no. 8 (April 1971). View source
  23. U.S. General Services Administration, “Explore by architectural style.” View source