The document provides details about several famous London landmarks. It describes The Tower of London as a historic site that was once a palace, prison, and zoo, and is now home to the Crown Jewels. Tower Bridge is highlighted as a modern attraction where visitors can learn about its history. The Houses of Parliament, also known as the Palace of Westminster, is outlined as the home of the British Government. Big Ben, one of the most famous clocks in the world, is noted as being located in the Clock Tower within the Houses of Parliament. St. Paul's Cathedral is summarized as the most impressive church in London, rebuilt after the Great Fire under the design of Sir Christopher Wren. Buckingham Palace is presented as the London