Charing Cross tube station

Charing Cross was a London Underground station proximate to Covent Garden. The Second Doctor walked the distance between the two along the rails, during the so-called "London Event". The British Army had rigged the station to explode, in order to combat the Yeti. Due to the fact that Jamie McCrimmon lied to the Army about being alone, the detonator was activated in ignorance of the Doctor's presence. Charing Cross, and the Doctor himself, escaped demolition only because a Yeti contained the explosion with its webbing. (TV: The Web of Fear)