Department of the Interior Museum [DC]
According to its website, the Department of the Interior Museum "educates the public and DOI employees about the current missions and programs of the Department of the Interior, the history of the Department, and the art and architecture of its headquarters building in Washington, DC." It maintains some original 1930s exhibits as well as updated exhibits, and the building features murals and other works of art.
The museum offers exhibits, guided tours (which may be accompanied by scheduled outside speakers), lectures, workshops for children, and occasional recreational and educational events.