From a distance one would assume that this structure is just your average roller coaster on top of a hill in Germany... however upon further inspection one would realise that it is in fact a walking roller coaster!
A staircase winds round the structure, allowing people to follow its curves to a 45 meter high climax providing spectacular views of the surrounding landscape.
Designed by artists Heike Mutter and Ulrich Genth they say that Tiger and Turtle "refers with its immanent dialectic of speed and deadlock to the situation of change in the region and its turn towards renaturation and restructuring." Which is fair enough, but I like it just for being an amazing piece of architectural sculpture that you can interact with!