Gray Line Tours open-top sightseeing bus tour is one of the most popular tours in D.C. Sit on the rooftop of this double-decker bus for the best views. The tour is hop-on, hop-off, so riders can come and go as they please. Gray Line has many buses so the wait for the next bus is never long. Gray Line makes 25 stops, which include the U.S. Capitol, the White House, the Lincoln Memorial and Arlington National Cemetery. Ticket includes a two day unlimited ticket, headphones and a CD with commentary about each site.
City Sightseeing's colorful double-decker, open-topped buses are hard to miss, even at night. The Washington Night Tour takes you through Washington when the monuments are lit up. View the White House and the Washington Monument in a new light. Other sites visited are the Jefferson Memorial, the Capitol, the Reflecting Pool, and the Lincoln Memorial. The night tour is not hop-on, hop-off, but City Sightseeing offers a day tour that does provide that option. Also, if you purchase a day ticket, you can take the night tour for free.
Old Town Trolley offers a more low key, yet charming experience. The trolley has large, open air windows and an open air sunroof. Conductors guide tourists through Washington D.C., telling stories and asking trivia questions related to the city. The Old Town Trolley Day Tour makes 19 stops, and drives by 100 points of interest. Stops include the National Cathedral, the Smithsonian and the White House.