Underground Soviet Submarine Base

I don't have a lot of information on this site, but damn is it cool. I mean, Bond-villain cool.
It is a disused Soviet-era submarine base, in the Ukrainian city of Balaclava. The base was operational until 1993, and is open for tourists today. It was designed to be a hardened site, resistant to nuclear attack. Although, to look at its construction, I doubt it would.