The National Air and Space Museum of the Smithsonian Institution, also called the Air and Space Museum, is a museum in Washington, D.C.. It was established in 1946 as the National Air Museum and opened its main building on the National Mall near L'Enfant Plaza in 1976. In 2016, the museum saw approximately 7.5 million visitors, making it the third most visited museum in the world, and the most visited museum in the United States.
