We may receive a commission on purchases made from links. Buildings with hidden spaces have long been a subject of public interest, with plenty of real-world history from ancient Egyptian tombs ...

His latest creation: you guessed it, is a secret bookcase door. For this tutorial, he took a regular book shelf and mounted it onto a wooden door, with the door itself functioning as the shelf’s ...

If you touch the secret book or knock out ... duty linear actuator pushes or pulls the door as necessary, onto which [Krizbleen] expertly mounted the bookcase with some 2″ caster wheels.

Because of her apartment's shape, Nainzadeh's visitors don't always realize there's a secret room just beyond the closet. “If I’m planning on getting a new place, I definitely would want to ...