In Fable 3 for the Xbox 360 and PC, there is a house in Mourningwood called Sunset House that you can enter that contains some interesting puzzles, and some treasures as well.
Travel to Mourningwood at night (this is important, you can’t open it during the day) or travel there and sleep until midnight. Go out of town and pass the first archway that has a light in it on the path. Stay on the right wall and it will take a sharp turn to the right, where you should see an open fence. Go inside to enter the Sunset House property.
Once you enter the gate, you’ll see a gazebo glowing blue off to the left as well. Go up to the gazebo and you’ll see four statues in various different poses. Interact with each statue only four times and it will suddenly turn daytime and the house will be real, and unlocked.
If you interacted with one of the statues too many times, or if you already messed with the statues before, here are how they should end up:
Going clockwise from the entrance of the gazebo, the first statue (female) is crouched with her fists in a fighting position, the second statue (male) is pointing and laughing, the third statue (female) has her hands in the air, and the fourth statue (male) is holding his stomach.