London can be divided into four main districts. The City, also known as the financial district, is at the heart of London and contains landmarks like St. Paul's Cathedral and the Tower of London. The City of Westminster contains government buildings like Parliament and Buckingham Palace, as well as attractions such as Westminster Abbey and Trafalgar Square. The West End is a wealthy area home to Hyde Park and museums such as the British Museum. The East End was once a working class area and still contains factories and docks today. London has become one of the world's most important cities, with a diverse population from around the globe.