New York's oldest and possibly grandest keeper of books.

Finally, you don't have to be a pious Swedish seaman to relax like one.

Sited in an Inner Mongolian desert are the remnants of an important trade stop along the Silk Road.

Enormous sandstone towers loom within a Czech forest.

A memorial to the thousands of Turkmen soldiers and civilians who died in a bloody 1881 battle.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

Ancient barriers wrap around what was once an important stop along the Silk Road.

Great Britain's only hat-making museum.

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

Traditional architecture and ancient irrigation systems are on display in this gorgeous mountain village.

Some claim these desert ruins are from the legendary "Atlantis of the Sands."

The historic bar where local ship captains, traders, and gold miners would come together to do business a century ago.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

Naked scientists race around the pole in the frigid cold to try to join Antarctica's exclusive 300 Club.

Nikola Tesla's former home contains an homage hidden from plain sight.

Off-limits and full of venomous pit vipers, Brazil’s Snake Island has a frighteningly apt nickname.

One of the largest and oldest caravansaries in Persia.

The Andean town where every single building is decorated with a brightly colored frieze.

At the point of oceanic inaccessibility, you can't get farther from dry land without leaving the planet.

This collection of historical artifacts and tropical wildlife waits just beneath the surface of the water.

A floating underwater hotel, created by a Swedish artist.

This beautiful arched gate is all that remains of the fortress the ancient mountaintop town of Amadiya once was.

A gargantuan crystal kingdom.

Cave where bat-eating snakes hang down from the ceiling.