We have no idea how to describe that thing, so we’ll let Inges Idee do the honors:

A regulation-sized basketball court was erected on the grove-like forecourt of the school building of the occupational school. The court consists of a soft orange-red tartan covering and two normed baskets and seems to be forced over the grid of the lamps that have been set up. The playable court has been “morphed” as in a 3D program on a computer and looks like the grounds of a rollercoaster, with heights and depths and calm and dynamic zones. The resulting paradox, which moves between a normative set of rules and pleasurable, anarchic change, requires creative engagement for its use.

(Photos courtesy of Markus Buck) (H/T: Ball Don’t Lie)