Find history at every corner as you glide through London's streets, admiring architectural and historical landmarks that are truly grand sights to behold. Pass beneath Big Ben's ticking clock, weave through the crowds at Trafalgar Square, and head to Buckingham Palace in time for the Changing of the Guard. Begin your day with a tour around Parliament Square to see the ornate golden façades of the Houses of Parliament, where the famed tower of Big Ben dominates the skyline. Look out for Westminster Abbey, the Gothic cathedral where Prince William and Kate Middleton were married.