London is the capital city of the UK and hosted the 1908, 1948, and 2012 Summer Olympics. It has many famous streets like Baker Street, Oxford Street, and Portobello Road. Some notable skyscrapers are St Mary Axe, Broadgate Tower, Tower 42, and One Canada Square. A popular monument is the London Eye, located by the Thames River. Football is the most popular sport and teams include Arsenal, Chelsea, and Crystal Palace. The UK flag features blue, red and white colors.