Small restricted places

I don't know if it is me but I feel an attraction to some restricted or room behind close doors.  It's the kind of place we don't have always access.  In the occasion I was able to go into some of those places a few times, I start to feel at ease and it become more familiar.  Then, I feel that all the mystery and attraction is gone.

Here are a few places that I am curious right now:

I am a bit less tempted by this one, I feel it is a bit too much like an ads: