This centuries-old Italian chapel hangs midway down a sheer cliffside.

An Italian hillside ghost town.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

A man-made slag heap that you can "ski" down, and is home to the world sandboarding championships.

A long-abandoned provincial prison left to crumble in the frigid air of Ontario.

Four-story slides send people whizzing through the math department at this Munich university.

The last bastion of Roman presence north of the Alps looms over a German town.

A meteorite-bounded town in Bavaria.

It's always summer at the beach inside this former airship hangar.

These 18th century gardens tell a rocky story of the son of Odysseus.

Floating swimming pool within a moored vessel.