This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

A sixth-century Byzantine cistern hidden below a modern carpet store.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Marie told fortunes from her small stand on the Boardwalk for decades, including to a young Bruce Springsteen who would busk outside her booth.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

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

A dreamlike medieval church dug into the tuff rock, with unusual carvings and possible traces of the Templar knights.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

Geothermal waterfalls in Tuscany.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

Notorious artist squat renovated into legal studios.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

The final resting place of the "father of special effects."

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

France's most famous cemetery, with some of its most curious tombs.

A 131-year-old wunderkammer of Texas history.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

An antique horse-drawn hearse provided French luxury for the dead in this Texan town.

This house proudly displays an interactive and continuously changing exhibit of lawn flamingos.

A former electrical substation is now home to an eccentric junk art masterpiece.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.