The Ultimate Washington ExperienceCreate the perfect combination for you and combine your Hop-on Hop-off tour with other exciting activities and attractions to make your Washington experience complete! You'll get a 10% discount if you combine your Hop-on Hop-off bus tour ticket with other activity tickets. For example: You can choose the Hop-on Hop-off FlexPass that allows you to visit 2 attractions for free! Or if you want to fit more in your itinerary then you have the option of buying a FlexPass for 3, 4 or even 5 attractions! The FlexPass includes entrance to Madame Tussauds DC, The International Spy Museum, The Newseum, The National Geographic Museum, and many more.