Oh yes, these places are real OK. Not far from where I live is 'The Secret Bunker', which is now a visitor centre and tourist attraction but was a secret underground bunker for government ministers and officials during the Cold War. It has an outdated, retro look about it, though I daresay had it still been in operation they would have added new computers and updated the technology. I've been there myself and well recommend a visit.
visit the site:
www.secretbunker.co.uk