Stunning examples of Russia's 18th-century wooden architecture.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

This leafy estate is worth $18 million and is so grand it has two mailing addresses.

Who is this marble man, perpetually creeping up the steps of his own mausoleum?

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

It specializes in outsider art and artifacts of secret societies.

A pair of 7-foot legs belonging to the military man of the Mayflower stand jauntily by the side of the road.

Immortal combat in a Moscow museum.

Walk the same tracks that once ferried Gilded Age aristocrats to their vacation destinations.

This colorful theme park dedicated the official fruit of Maine serves sweet, tasty treats.

A beautiful, creepy 19th-century castle stands incongruous in rural Vermont.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

The underground sanctuary of a mysterious ancient cult.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

The final resting place of the world's first nuclear reactor.

The final resting place of New England's last "vampire."

How did a French journalist’s grave become the sexiest statue in the cemetery?

Tour the sci-fi-esque reality of governmental disease management.

This stone is a marker of one millionaire's personal vendetta against gravity.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.