The Smithsonian Arts + Industries Building is the original home of the United States National Museum, which was founded in 1846. The building is located on the National Mall in Washington, D.C., and is part of the Smithsonian Institution.

The building was designed by architect James Renwick Jr., and opened to the public in 1881. It was one of the first buildings constructed on the National Mall and served as a model for other structures that were built in the area.