London's History: A Visitor's Overview

Understanding London's history makes the city make sense — why the street plan looks the way it does, why the financial district is where it is, why the parks are so large. Here's the brief version.

Roman Londinium (43–410 AD)

The Romans founded Londinium as a trading settlement and administrative centre around 43 AD, choosing the first point upstream where the Thames was narrow enough to bridge reliably. The medieval and modern City of London sits almost exactly on the Roman footprint — the Roman walls largely determined the boundaries that survive today. Roman finds are in the Museum of London at Docklands; a significant section of the Roman wall is visible near the Barbican.

Medieval London

The Tower of London was begun by William the Conqueror in 1066 to dominate the city he had just conquered. Westminster Abbey was consecrated the same year. The medieval city grew around the original Roman core, bounded by its walls, with trade flowing through the Thames.

The Great Fire (1666)

The Great Fire of London destroyed 13,200 houses and 87 churches in four days. Christopher Wren rebuilt 51 of the churches and St Paul's Cathedral — the Wren churches scattered through the City are the direct physical legacy. The Monument (near London Bridge) was built to commemorate the fire.

Georgian & Victorian Expansion

The 18th and 19th centuries saw London grow from a city of 700,000 to over 6 million — absorbing villages that are now neighbourhoods (Hampstead, Clapham, Brixton), building the railway network, the Tube (1863), the sewage system that ended cholera, and the grand public institutions including the Victoria and Albert Museum and Natural History Museum.

The 20th Century

The Blitz (1940–41) destroyed significant sections of the East End and the City. Post-war reconstruction created the council estates and modernist buildings that now coexist with Victorian terraces. The 1980s financial deregulation ("Big Bang") created Canary Wharf and the modern City.

Tips

• The Museum of London (at two sites) covers this full sweep with excellent exhibits — free.
• A walk through the City on a weekend reveals the Roman and medieval street plan beneath the modern buildings.
• The Wren churches are scattered and unlocked: duck inside any that are open.