A secret passage is usually inside a structure leading to a secret room or a way of entering/exiting without being seen. Hidden rooms and passageways have helped people carry out illegal, religious, political, or smuggling activities, evade capture, and spy on others. Many Medieval Castles or Arabic houses were not complete without a secret passage. The entry to these passages were difficult to detect. The doors were camouflaged so they appear as a part of the structure such as bookshelf, with a window ledge, fireplace, or ornament on the wall. Some entrances were more elaborately concealed and can be opened only by engaging a hidden mechanism or locking device. Other hidden doors were much simpler such as a trapdoor hidden under a rug. A secret passage is not just the province of ancient castles and the mansions of famous magicians. Secret passages can be easily built in your own home, and they can provide hours of entertainment for newcomers and family members alike. To build your own secret room, you will need a power saw and drill, a hammer, a door, levers, screws and nails.
1st Step - Measure and remove a section of wall (non-load bearing, please).
2nd Step – Rebuild the wall as far into the room as needed and install a recessed wall sliding door.
3rd Step - Install a trigger mechanism such as a picture frame, a conveniently placed book, or a button the color of the wall paper or paneling.
4th Step - Install a system of levers attaching the trigger mechanism to the doorknob, such that when you turn the picture frame, the door will slide open.
5th Step - Lastly, wallpaper or panel the wall so the secret door blends into the surrounding wall and the seams of the door are impossible to differentiate from the surrounding wall.