Discover Washington DC at your own pace with four (4) Discover 1-day hop-on, hop-off bus tour passes. You'll enjoy unique, top-deck views as you explore the capital's best sights and most famous landmarks and attractions, including the White House, Capitol Hill, Jefferson Memorial, Smithsonian Castle, and many more. *Tickets have a validity of 6 months from June 2023, also specified as a valid date of December 2023.