So in the room filled with paintings of the lady in red + blue + yellow, you know the one with 14 paintings and a bunch of headless statues, there's the picture of the hanged man who when you examine his body you see 5629 which upside down becomes 6592 (What you would see looking at him standing straight up) I thought this would be the code for the door to the left but it didn't work, was curious if anyone knew when this picture comes in handy, maybe I'm just doing it wrong?
It's for a password-locked door.