In Paris, there are the same post-WW2 shelters. I worked in one of them owned at the time by the France Telecom. I liked it as I felt like a spy :) You entere

In Paris, there are the same post-WW2 shelters. I worked in one of them owned at the time by the France Telecom. I liked it as I felt like a spy :) You entered from the street thru a small door. Then in the hall there was a guy behind a glass, asking for ID. Once verified, you could turn to the elevator. There was nothing else in this entry hall, a glass window and an elevator door. The elevator was going 7 level deep (could go to 9 if I recall, but I did not have access to lower level). -7 was weird. They had fake windows with artificial light behind. Walls with huge landscape picture. It was warm too. And kinda dead, as I was sometime the only one working at that floor, and I could not venture much as there were cameras everywhere. It was actually cool still :)