Secret rooms, secret niches, and secret passages accompany mankind throughout its history. All European castles have a lot of secret passages because of the era of persecution of Catholics. Even nowadays secret doors can be found in many homes. Usually doors are acts as parts of bookcases but that isn’t always true. There are even doors that looks like clean walls but they lead to hidden rooms too. Check out some examples that gathered for you and don’t tell us that you never wished you had such room.