Enjoy a walking tour of Westminster with an Italian-speaking guide and see London’s most historic places. The 4-hour program also includes a visit to the National Gallery. Start the tour near the Palace of Westminster, a stunning example of neo-Gothic architecture. The structure is dominated by the iconic clock known as Big Ben. Continue to Westminster Abbey, walk through St. James's Park and by 10 Downing Street. Watch the Changing of the Horse Guards. At the north end of Trafalgar Square is the National Gallery, which is home to a vast collection of art from the Renaissance to Impressionism. With an art expert guide, you'll see paintings by a range of important artists.