A castle that was built stone by stone by an eccentric journalist.

An ethereal glowing blue ocean cave in Croatia.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

A gargantuan crystal kingdom.

The anatomical-pathological collection of a man who changed surgery.

A giant Troll lurks under one of Seattle's oldest bridges.

An emporium for the weird, creepy, rare, and just plain gross.

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

One of the oldest medical collections in Europe focusing on rare surgical instruments.

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

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

The final resting place of New Orleans' most famous voodoo priestess.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

A layered tribute to the work of mosaicist Isaiah Zagar.

Once the most densely populated place in the world, this island is now a ghost town.