Washington DC is the capital of the United States. More formally known as the District of Columbia, this federal district is not part of any one state, though it is bordered by the states of Maryland and Virginia. Washington DC is home to many of the important government buildings of the United States, including the White House and the US Capitol Building. But thatís not all this magnificent city is known for. Washington DC is also a hotbed a culture, housing some of the finest art and history museums in the United States. And of course, there are the many impressive monuments, including the Lincoln Memorial, the towering Washington Monument and reflecting pool, the Jefferson Memorial, the National World War II Memorial, the Korean War Veterans Memorial, the US Marine Corps Memorial, and the Vietnam Veterans Memorial. Other popular stops for visitors include the Library of Congress, and the 19 museums operated by the Smithsonian Institution. The city is also known for its performing arts centers, including the John F. Kennedy Center for the Performing Arts (home to the National Symphony Orchestra), the Washington National Opera, and the Washington Ballet. Nature-loving tourists flock to the city in the spring when the cherry blossom trees that line the cityís streets are in full bloom.