Popsugar Living Diy Man's Bookcase Turns Into a Secret Room This Bookcase Opens Up to a Secret Room That'll Blow Your Mind August 20, 2015 by Marina Liao View On One Page Photo 8 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 Close-up of the walls: Plywood and pine were used to make the trim. Antique glazing gave the walls an aged look and feel. Previous Next Start Slideshow DIYHome RenovationsImgur