Ambulatory Amusement Ride of the Day: The Tiger & Turtle Magic Mountain in Duisburg, Germany, is the world's first and only "walkable roller coaster."

Designed by German artists Heike Mutter and Ulrich Genth, the 69-foot-tall structure features the same twists and turns found in a conventional roller coaster, but the loop-the-loops are, sadly, inaccessible.

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