I have a real-life hidden room in my apartment, I shit you not, there's a wall and NO ONE told me there's something behind it and the previous owners had no idea. Let me show you:
Door. Hallway. Alcove for jackets, coats and shoes. Left in a state of "meh, can't be bothered" by someone ??? years ago. Even the floor is unfinished.
My mother asked if there was anything behind it, and so, we knocked. Hollow-ish sound. Plaster wall, screws and silicone. Eh, what the hell, let's bore two holes and see if there's something behind it! I can always fill them back up.

















