The City of London, often referred to simply as “the City” or the “Square Mile,” is London’s historic core and primary financial district. It occupies an area of approximately one square mile (2.9 square kilometres) within Greater London, bordered by the River Thames to the south. The area retains its own local authority, the City of London Corporation, which predates many modern administrative structures and maintains unique ceremonial and governance traditions.
Historically, the City of London corresponds to the site of the Roman settlement of Londinium, established around AD 47–50. Remnants of the Roman city wall can still be seen, including sections near the Tower of London and Museum of London. During the medieval period, the City developed as a commercial hub, hosting guilds and markets and remaining the centre of English trade and finance into the modern era.
Today, the City is known globally as a major financial centre, housing the headquarters of banks, investment firms, and insurance companies. Notable institutions include the Bank of England and Lloyd’s of London. The skyline features modern architectural landmarks such as 30 St Mary Axe (The Gherkin), The Leadenhall Building (The Cheesegrater), and 20 Fenchurch Street (The Walkie-Talkie), alongside historic buildings like the Guildhall and the Royal Exchange.
Key attractions include St Paul’s Cathedral, designed by Sir Christopher Wren and completed in 1710, which remains a prominent religious and architectural landmark. The Museum of London documents the city’s history from pre-Roman times to the present and is undergoing relocation to a new site at Smithfield. Other sites of interest are the Barbican Centre, a major arts venue, and numerous smaller historic churches, many designed by Wren after the Great Fire of London in 1666.
The City of London is busiest on weekdays due to its commercial nature, with a quieter atmosphere during weekends. Transport links are extensive, including major Underground stations such as Bank, Monument, and Liverpool Street. The district combines historic significance with modern economic function, offering visitors insights into London’s evolution as a global city and financial capital.
Google map City of London
Google map The Gherkin 4.6/5
Google map The Cheesegrater 4.6/5
Google map The Walkie-Talkie & Sky Garden 4.7/5
Google map St Pauls Cathedral 4.7/5
Google map The Tower of London 4.7/5
Google map The Museum of London (currently closed)