From a distance, "Tiger and Turtle -- Magic Mountain" looks like a conventional roller coaster, but get up close and you'll realize its curves aren't meant for a quick adrenaline rush. The steel structure, which made its public debut Nov. 13, is actually a giant sculpture by German artists Heike Mutter and Ulrich Genth.

A barrier prevents visitors from accessing the sculpture's closed loop.

Offbeat Traveler: 'Tiger and Turtle -- Magic Mountain' installation in Duisburg, Germany -