London is the capital of England and the United Kingdom. It has a population of over 7 million people and is one of the most important cities in the world. London flourished as the capital of the British Empire between the 16th and 20th centuries, though much of the city was destroyed in the Great Fire of 1666 and took over 10 years to rebuild. London is situated on the River Thames and has a long history and diverse culture, hosting many museums, theaters, and symphonies. Important landmarks include the London Eye, Tower Bridge, Tower of London, 30 St. Mary Axe, Westminster Palace, and Buckingham Palace.