Pedestrian Roller Coaster

This art piece is just visually interesting. 

Designed by Heike Mutter and Ulrich Genth, the “Tiger and Turtle – Magic Mountain” sculpture in Duisburg, Germany. It has been built on top of a mining waste tip at the Heinrich-Hildebrand-Height in the Angerpark, which opened in 2008. So if you’re scared of Roller Coasters, experience this instead. I’m pretty sure you won’t be screaming at all. - Source

I dare someone to do the loop.