“Tiger & Turtle – Magic Mountain” in Duisburg, Germany is a walkable looping, curving stairway that seems to go upside-down like a real roller coaster, but the reality is it is purely illusional and part of the amazing design.
Architects Heike Mutter and Ulrich Genth explain, “Having a closer look, the public is disappointed in a disarming way. The visitor climbs on foot via differently steep steps the roller-coaster-sculpture. So the sculpture subtly and ironically plays with the dialectic of promise and disappointment, mobility and standstill.”
The structure has LED lights in the handrails, making it accessible also at night in addition to acting as a landmark, which is visible from miles away.