The mystery is subtle, but it is definitely present Some time long ago some careful architect designed and crafted those elaborate panels and the other rich details. But today the windows are falling out and the frames are cracking. The building is a moldering shadow of its once glorious self: forcing us to ask "What became of it?" I like it; thanks for entering it.
You wuz robbed. There's a lot of mystery here -- it's in the details and you have to look! Love the curtains and other stuff that is visible on the inside from the exterior. Nice moody colors, too.
Would love to see a shadowy human form in those interior shadows, but I guess that would be too much to expect, since there's little chance you know the inhabitants. I like the shot.
The ornamentation of the architecture does give a bit of a mysterious feel, but not a ton. It's tough to get right, but learning how to adjust perspective in PS to mimic a tilt-shift lens would be helpful. I do like the desat feel. 4