This lovely ancestral home inspired the author D.H. Lawrence, and features a tunnel made out of a living willow.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Staves, storm-calling, and of course, necropants.

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

A 16th-century horror show built in a lovely Italian garden.

One man's swirling six-acre monument of stone.

The famous winding walk at Chartres is surrounded in mystery and myth.

Ancient paintings known as the "Sistine Chapel of Cave Art."

A church of bones, decorated with 40,000 human skeletons.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

No one knows why ancient labyrinths were built on this tiny northern island.

2300-year-old Roman road connecting the empire.

This legendary city has been a tourist attraction for centuries.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

The underground sanctuary of a mysterious ancient cult.

Virgil's many-mouthed gateway to the underworld.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

The hallucinogenic center of the ancient world.