Restrooms are found in all of the city's museums and galleries. Most are accessible to people in wheelchairs, and many are equipped with changing tables for babies. Locating a restroom is often difficult when you're strolling along the Mall. There are facilities at the Washington Monument, the Lincoln Memorial, the Jefferson Memorial, and Constitution Gardens, near the Vietnam Veterans Memorial, but these are not always as clean as they should be. A better option is to step into the closest Smithsonian museum, all of which are free and have excellent public restrooms.
Restrooms are also available in restaurants, hotels, and department stores. Unlike in many other cities, these businesses are usually happy to help out those in need. There's one state-of-the-art public restroom in the Huntington Station on the Metro. All other stations have restrooms available in cases of emergency; ask one of the uniformed attendants in the kiosks.