When Christian Schallert isn’t cooking, dressing, sleeping or eating, his 24 square meter (258 square feet) apartment is an empty cube. To use a piece of furniture, he has to build it.

To sleep, he rolls his bed out from under the balcony, his stairs become become bedside tables and he can even swing his tv out from the wall.

To dine, he lowers a plank from the wall, his flower-stand becomes a support and his stairs become a bench.

To cook, he clicks a spot on his vast wall of click-able furniture, and a spring-loaded door swings up to reveal an instant kitchen: double-burner, dishwasher, sink, countertop and microwave oven. The full-sized refrigerator and freezer click open just alongside.

Located in Barcelona’s hip Born district, the tiny apartment is a remodeled pigeon loft.  It was designed by architect Barbara Appolloni and Christian (a Barcelona-based photographer) says its design was inspired by the space-saving furniture aboard boats, as well as the clean lines of a small Japanese home.

While there’s undoubtedly more work involved in constructing and deconstructing your dining room/kitchen/bedroom every day or meal (one of his friends has dubbed it “G.I. Joe’s flat”), Christian claims it helps keep him in shape.

In this video, Christian shows us his lego-style home and invites a few friends over to cook and lunch with him in his small space.

[Note: Christian recently moved out of his apartment after getting into a relationship and realizing while it’s a great bachelor pad, it’s not as ideal for two.]