See london on a full day sightseeing tour of the city led by a guide hear the history of top london attractions like westminster abbey and big ben and receive fast track entry and a guided tour of st pauls cathedral after the sightseeing tour watch the changing of the guard ceremony at buckingham palace and tour the tower of london as a bonus this experience also includes a one way river thames sightseeing cruise which can be used on the day or another time upgrade to include a flexibl