The National Gallery of Art is located in Washington, D.C. and is one of the most prominent art museums in the United States. Established in 1937, it houses an extensive collection of European and American art, ranging from the Middle Ages to the present. The museum is divided into two buildings: the West Building, which features classical art, and the East Building, known for modern and contemporary works. The gallery's collection includes masterpieces by renowned artists such as Leonardo da Vinci, Vincent van Gogh, and Georgia O'Keeffe. Admission to the museum is free, making it accessible to visitors from around the world who wish to explore its rich artistic heritage.