It was a big underground submarine base and docks once in USSR. Russian singles in canada the Soviet Union collapsed and Russian army left Ukraine it was partly abandoned and some of its parts was converted into a museum later.

I totally agree, that is awesome! That is in Balaklava outside of Sevastopol. I have been there and it is awesome! Looks like something out of a James Bond movie. That would make a great movie set. Still in very good condition inside.

Reminds me of video game Half Life. One James Bond should definitely be filmed there. Amazing how something like this can be abandoned. I can think of many uses for it.