Through the Looking Glass
Yep, it’s a secret-room-hiding mirror. Open the mirror like a door and step through (on the 2nd picture, look towards the bottom to see the bottom edge of the mirror/door. The plant on the table and the other big plant are reflections in the mirror). Un-fricking-real! Just go on into your mirror!

And some more cool hidden rooms:


(Source: hiddenpassageway.com)


