Begin your full-day tour with a panoramic drive through Kensington, Belgravia, Mayfair, Westminster, Piccadilly Circus, Trafalgar Square, and Parliament Square. Stop for photos at the Houses of Parliament, Westminster Abbey, and Big Ben. Continue to Buckingham Palace and see the changing of the guard. After lunch (additional cost), explore the oldest part of London, known as the Square Mile. Head to the Tower of London and see the Crown Jewels, Beefeater Guards, and the legendary ravens. Finish with a short cruise on the River Thames. See London Bridge, William Shakespeare's Globe Theatre, Millennium Bridge, Waterloo Bridge, St. Paul's Cathedral, the London Eye, and more.