The United Kingdom of Great Britain and Northern Ireland is a country located off the north-western coast of continental Europe. The country consists of the island of Great Britain, the north-eastern part of the island of Ireland and many other smaller islands. London is the capital of the United Kingdom. Covering an area of 607 square miles, it is the largest metropolitan area in the United Kingdom. It is located on the River Thames. London is the largest financial centre along with New York. The Tower of London, Kew Gardens, the Palace of Westminster, St Margaret’s Church, Buckingham Palace, Piccadilly Circus, and Trafalgar Square are among the city’s major attractions. With its fashion, cuisine, tourist attractions, art and architecture, it's no wonder it's the most visited city in the world.