What are the names of the two large museums east of the Washington monument?

The two large museums located east of the Washington Monument are the National Gallery of Art and the Smithsonian National Museum of American History. The National Gallery of Art is known for its extensive collection of European and American art, while the National Museum of American History focuses on the cultural, social, and political history of the United States. Both are part of the Smithsonian Institution and are popular attractions for visitors to the National Mall.