London is the capital and most populous city of England and the United Kingdom.
Standing on the River Thames in the south-east of the island of Great Britain.
London is a leading global city in the arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism, and transportation. It is crowned as the world's largest financial center and has the fifth- or sixth-largest metropolitan area GDP in the world.
London is a world cultural capital. It is the world's most-visited city as measured by international arrivals and has the world's largest city airport system measured by passenger traffic.
London contains four World Heritage Sites: the Tower of London; Kew Gardens; the site comprising the Palace of Westminster, Westminster Abbey, and St Margaret's Church. The London Underground is the oldest underground railway network in the world.