Barcelona-based photographer Christian Schaller's rooftop apartment crams six rooms into 258 square feet. Like the Hong Kong Efficiency Apartment Tori shared a ways back, Christian's bathroom, kitchen, living room, bedroom, dining room and porch emerge when needed from cupboards, cabinets and compartments. The kitchen unfolds from the wall, the bed/couch emerge from under the porch and various other amenities pop and swivel out from their nesting places.

Watch the video below for a full tour.

Some other posts you might enjoy on our design blog:

Hong Kong Apartment: Efficiency to the Max

A Cozy and Modern Cabin by Olle Lundberg Architecture Design

Surf Shack Beach Retreat from Old Shipping Container

Via Design You Trust