Moonbase Eisenhower was a secret moonbase built by the United States of America on the far side of the Moon in the 1960s using alien technology.
It was named after U.S. President Dwight D. Eisenhower. The moonbase was designed to contain a viable minimum population. In the event of a nuclear war, the plan was for its inhabitants to eventually return to Earth and rebuild human civilisation. It was destroyed by the Sixth Doctor on 23 November 1963. (AUDIO: 1963: The Space Race)