This architecturally eclectic fortress witnessed centuries of bloody turmoil, including the massacre of its ruling clan.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

The charmingly disheveled clock tower of Tbilisi's puppet theater.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

Follow the original medieval paths that wind through this intriguing section of the city.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

The second oldest continuously operating bar in Louisiana.

This huge abandoned fortress hidden inside a mountain holds a world of subterranean secrets.

The “City of Stairs” sits high in the Andes, above the world’s largest underground copper mine.

Iceland's only steampunk shop imagines a retro-futuristic world that never was.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

A luxury hotel housed in a former 15th century Gothic church.

This one-time health resort was used by aristocrats around the world.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

Double spiral staircases are not unheard of, but they are very rare.

A shrine of fire worship built on top of a natural flame.

Mysterious hillside with a continuously burning natural fire.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

An abandoned hotel in the highlands of Bali is shrouded in stories of ghosts, curses, and corruption.

The Icelandic Sea Monster Museum explores the area's history of aquatic cryptid sightings.