A serpentine highway twists and turns over the treacherous Norwegian Sea.

A unique opportunity to stay the night in retrofitted sections of sewer pipe.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

A British general, a suggestive tree, a map of paradise.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

One of the greatest maze designer’s greatest mazes.

A spectacular cave and a beguiling lake.

A chapel on a volcanic core, marking the end of a successful journey.

Bridge that died in war and was resurected.

Walk through living pictures and music in the Cathedral of Images.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.