The document discusses several famous London landmarks and attractions. It describes Buckingham Palace as the London home of the British monarchy where the Changing of the Guard ceremony takes place daily. It mentions Trafalgar Square, home to Nelson's Column commemorating Lord Nelson's victory at Trafalgar, and the National Gallery housing many paintings. It also outlines Big Ben, the famous clock tower overlooking the Houses of Parliament, St. Paul's Cathedral designed by Christopher Wren after the 1666 Great Fire, and Tower Bridge which opens to allow ships to pass on the River Thames. Finally, it notes Madame Tussauds museum contains wax figures of famous people that attract over two million visitors annually.