Secret Bunker. An innocent looking farmhouse conceals the entrance to Scotland’s best kept secret. Scotland’s Secret Underground Nuclear Command Centre, near St Andrews. From it’s top secret Command Centre to dormitories, broadcasting studio and CND Room and learn how the elite survived the Cold War. 100ft underground is RAF Troywood, an “R3” style ROTOR bunker built by the RAF in 1953 in response to the threat of Nuclear War with the USSR.