4 March, 2005
This is a seriously old website, so I suppose that there's a risk that anyone interested will have already seen it. It was 'Cool Site Of The Day' on 9 January, 1996, so be aware that the standard of web design is correspondingly dated!
It's a 'VR' (yeah, right) tour of a derelict nuclear missile launch site somewhere in the USA. Kind of interesting.
Via the main home page of the same website, there are two other underground tours, of the Paris catacombs, and of the author's basement.