London's streets are a vertical timeline. Few cities preserve such a complete, visible sequence of architectural eras — each layer built atop, beside, or from the ruins of the last.
| Era | Period | Surviving Examples | Character |
|---|---|---|---|
| Roman | 43–410 CE | London Wall (fragments), Amphitheatre (Guildhall), Temple of Mithras (Bloomberg), Wharf timbers | Grid plan, fort, bridge, port — foundation of the City |
| Medieval | 1066–1485 | Tower of London (White Tower 1078), Westminster Hall (1097), St. Bartholomew-the-Great (1123), Guildhall (1411), Charterhouse | Stone churches, halls, city walls, inns of court |
| Tudor | 1485–1603 | Hampton Court Palace (Wolsey/Henry VIII), St. James's Palace, Sutton House (Hackney), Great Hall (Charterhouse) | Red brick, hammer-beam roofs, gatehouses, chimneys |
| Stuart / Restoration | 1603–1714 | Banqueting House (Inigo Jones, 1622), St. Paul's Cathedral (Wren, 1675–1710), 51 City churches (Wren), Kensington Palace | Classical Palladian, Baroque, scientific architecture |
| Georgian | 1714–1830 | Bedford Square, Grosvenor Square, Regent Street (Nash), British Museum (Smirke), Royal Albert Hall (later), terraces (Islington, Bloomsbury, Mayfair) | Uniform stucco/brick terraces, sash windows, symmetry, squares |
| Victorian | 1837–1901 | Houses of Parliament (Barry/Pugin), St. Pancras (Gilbert Scott), Natural History Museum, Tower Bridge, Albert Memorial, Underground (1863), Bazalgette sewers | Gothic Revival, iron/glass, massive infrastructure, philanthropic buildings |
| Edwardian | 1901–1914 | Ritz Hotel, Savoy Hotel, Selfridges, Admiralty Arch, County Hall, LCC housing estates | Beaux-Arts, Baroque Revival, steel frame, luxury commercial |
| Interwar / Modernist | 1918–1945 | Senate House (Holden), BBC Broadcasting House, 55 Broadway (Holden), Highpoint I (Lubetkin), Tube extensions (Piccadilly, Central) | Art Deco, early Modernism, public housing, statutory planning |
| Post-War / Brutalist | 1945–1980 | Barbican Estate, National Theatre, Hayward Gallery, Trellick Tower, Centre Point, Broadgate, Lloyd's Building (Rogers) | Raw concrete, megastructures, podium/tower, High Tech |
| Contemporary | 1980–present | The Shard (Piano), Gherkin (Foster), Walkie-Talkie, Cheesegrater, Crossrail (Elizabeth Line), 22 Bishopsgate, Battersea Power Station redevelopment | Supertalls, parametric, sustainability, mixed-use, public realm |
London doesn't replace; it accumulates. Every era writes on the same parchment.