It almost looks like part of the building is invisible. This architectural project was designed by studio MLRP—they “transformed an existing graffiti-plagued playground structure to an inviting and reflective pavilion as part of the new ‘Interactive Playground Project’ in Copenhagen.”  MLRP used fun house mirrors to create an interactive space for passing spectators, which allowed them to see different reflections and transformations.
1. "Mirror House MLRP." Thisispaper.com. Retrieved on January 17th, 2012. Photos © Laura Stamer Link via Design You Trust and This is Paper