Polygon Playground is an interactive art installation where graphics are mapped onto a multifaceted climbing/lounging structure. Based on the impressive video, it seems ideal for a nightclub, or Tron theme park. From the project page:
It offers room for up to 40 persons at a time to walk, sit and explore its multifaceted surfaces. Gradient ramps guide to the top plateau or offer space to sit and rest. The installation features a software aided 3D surface projection system to cover the object with a seamless 360 degree projection mapping. An additional sensory system detects peoples positions and proximity.
The visual appearance of the "Polygon Playground" changes continously with the presence, movements and touches of its visitors. The object detects the positions and directions of people and reacts with evolving visual moods and graphic styles.