The Washington Monument in Washington National Square, 169 meters high, is the tallest building in DC. [Doraemon Amazed] So I recommend mount the monument, look at the city panorama, rent a car and pack up the Lincoln Memorial, the White House and the Capitol Building nearby. When I think of Washington, D.C., I have beautiful scenery and splendid history and culture. The Washington Monument at night, the walk under cherry trees, the Smithsonian Castle and the fashionable City Center are all worth visiting. I also printed some postcards about my trip to the United States, forwarded one of your favorite postcards, the first 200 messages and forwarded fans can get a set of postcards free of charge.