A day trip to London doesn't have to break the bank. With lots of free attractions, discounted attractions and good value train tickets, there are cheap days out to suit every wallet. London has a host of free attractions. Explore the 350 acres of Hyde Park, see the world's precious treasures at the British Museum or go shopping at Spitalfields Market. Other attractions worth exploring that are of great value include Battersea Park Children’s Zoo, Guards Museum or The Cartoon Museum.