Dramatic river bend surrounds a natural red-rocked pedestal.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A snapshot of the city's fascinating voodoo culture.

Medicinal spa created with the discharge from a geothermal energy plant.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

An emerald-green grotto just a short trip from Austin.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Most-visited and most-photographed slot canyon in the American Southwest.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Rippling sand dunes frozen in the Arizona rock.

An exquisite tunnel of cascading flowers.

A terrific purveyor of natural history objects and curios.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Commonly acknowledged as the only public monument to the Devil himself.

Sleepy fishing port not included on many maps.

At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.

Numerous impressive carvings are embedded in the trees lining this street in Marrakech.

A mythical garden that once grew the golden apples of wisdom is said to have existed in this ancient Moroccan city.

Rocky Atlantic beach home to a stunning stone arch.

Mosaics, storks, and brothels—this ancient city has it all.