by Miryam Muller in

The Germans are, on the whole, an active, outdoorsy bunch, and so will probably be quite happy with this “walkable roller-coaster.”

The Tiger & Turtle is a roller-coaster with steps and slopes that need to be climbed under human power, a concept completely laughable in the U.S, a country where 70% of car journeys are less than two miles long. The roller-coaster is actually more of a sculpture than a theme-park ride (designed by German artists Heike Mutter and Ulrich Genth), but that doesn’t makes its loops any less impressive.

The 21-meter (69-foot) structure sits atop a hill made of toxic zinc slag left over from local mining operations. This puts the visitor 45 meters (148 feet) above the surrounding countryside of Duisburg.

Tiger & Turtle