This is a great way to tour the sites of Washington, D.C. in comfort. Take an open top double-decker bus that stops at 22 D.C. sites, including the White House, Air & Space Museum, and U.S. Botanical Gardens. All this includes a guide’s live narration. Tickets are good from 9-5 daily and buses run approximately every 40 minutes.
Here’s the discount: $35 adult tickets are $20, and $18 child tickets are $10.