The City of London is a district of London. The City constituted most of London from its settlement by the Romans in the 1st century AD to the Middle Ages, but the conurbation has since grown far beyond its borders. As the City's boundaries have remained almost unchanged since the Middle Ages, it is now only a tiny part of the metropolis, though it remains a notable part of central London. The City holds city status in its own right, and is also a separate ceremonial county.
It is often referred to as the City (often written on maps as "City") or the Square Mile, as it is just over one square mile (1.12 sq mi (2.90 km2)) in area. These terms are also often used as metonyms for the United Kingdom's financial services industry, which continues a notable history of being based in the City.
The term London now refers to a much larger conurbation roughly corresponding to the London region, which is also known as the Greater London administrative area, of 32 boroughs (including the City of Westminster), in addition to the City of London. The local authority for the City, the City of London Corporation, is unique in the United Kingdom, and has some unusual responsibilities for a local authority in Britain, such as being the police authority for the City. It also has responsibilities and ownerships beyond the City's boundaries. The Corporation is headed by the Lord Mayor of the City of London, an office separate from (and much older than) the Mayor of London.
The Millennium Bridge, officially known as the London Millennium Footbridge, is a steel suspension bridge for pedestrians crossing the River Thames in London, England, linking Bankside with the City. It is located between Southwark Bridge (downstream) and Blackfriars Railway Bridge (upstream). The bridge is owned and maintained by the Bridge House Estates, a charitable trust overseen by the City of London Corporation. Construction of the bridge began in 1998, with the opening on 10 June 2000.
Londoners nicknamed the bridge the "Wobbly Bridge" after participants in a charity walk on behalf of Save the Children to open the bridge felt an unexpected and, for some, uncomfortable swaying motion on the first two days after the bridge opened. The bridge was closed later that day, and after two days of limited access the bridge was closed for almost two years while modifications were made to eliminate the wobble entirely. It was reopened in 2002.
The southern end of the bridge is near the Globe Theatre, the Bankside Gallery and Tate Modern, the north end next to the City of London School below St Paul's Cathedral. The bridge alignment is such that a clear view of St Paul's South façade is presented from across the river, framed by the bridge supports.