In big cities, space is at a premium. But while your urban neighborhood may not have room for both soccer fields and a basketball court, a foldable rec center by a group of South Korea-based architects has it all, WIRED reports.

Employees at B.U.S. Architecture set out to solve a local problem: in Seoul, you need to reserve a basketball court two months in advance to play. The resulting "Undefined Playground" folds out to support a variety of games. Each face of the wheeled structure supports a different game: one has basketball hoops, another a soccer goal, another discus targets, and another a blank face to hit tennis or racket balls against.

Depending on how the oversized doors are folded out, you can create a small enclosed court for your game. The Undefined Playground also contains a small room that can be used for equipment rentals or as an office.

You still need enough space to move around in, but with the folding playground, that space can just as easily be a parking lot as a painted court.

[h/t WIRED]

All images by Kyung Roh courtesy B.U.S. Architecture