Sweden's oldest street has not changed for nearly a millennium.

A striped 12th-century basilica sits in the countryside of Sardinia.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The development of this cliffside waterpark is representative of Mexico's history of co-op tourism developments.

A tunnel with windows, so you don't miss out on the impressive views.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Sleep in a glass pod dangling off a cliff.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

At high tide this strange footbridge appears to have no purpose whatsoever.

Norway has built what may be the world's most beautiful public toilet.

This Aztec structure remained hidden until the demolition of a supermarket exposed the lost temple.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

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

A barbarous band of serpents guard the bases of these Aztec temples.

The concrete skeletons of an abandoned Swedish town hide among the trees.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

These little-known sands dunes are a geological anomaly in Saskatchewan's southern prairies.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.