Brigadoon

Brigadoon was an American film made during the 1950s which starred Gene Kelly and Van Johnson. It told the story of two American tourists who stumble upon a mysterious Scottish village which appears for only one day every 100 years. It was one of Lizzie Corrigan's favourite films. However, Nyssa had never heard of it. (AUDIO: The Eternal Summer)

The Unthinkable City had a Brigadoon circuit. (PROSE: Alien Bodies)

The Tenth Doctor compared the country of Goritania to Brigadoon. (AUDIO: Death and the Queen)