The oldest colonial fortress in the Americas was once the home and later prison of Christopher Columbus.

After Christopher Columbus died, his son built a fancy house to rule from.

The first official clock in North America, it kept time for the Spanish government of Santo Domingo.

Built in 1512, the oldest cathedral in the Americas.

The first hospital in the New World.

This elaborate temple was built around one of the Buddha's teeth.

An ancient stone fortress considered by many to be the eighth wonder of the world.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

Little India's hidden gem of kindness and good food.

A mysterious phallic rock on the grounds of a Buddhist monastery.

Dinosaur eggs were first discovered at these fiery red cliffs.

An exceptional assortment of fossils recovered from private collections.

The oldest Buddhist monastery in Mongolia has survived centuries of invasions, political shifts, and religious purges.

The grassy landscape is home to the world's last truly wild horses.

The world's longest tunnel with an undersea section.

The statue's head is one of the few fragments of the original Urakami Cathedral to survive the atomic bomb.

This ordinary set of steps is a must-see destination for fans of a certain romantic anime.

The iconic castle that withstood a magnitude 6.2 earthquake has become a symbol of resilience.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

Founded over a thousand years ago, this shrine is said to be built on the site of a warlord's harem prison.

Peace Park and the Atomic Bomb Dome.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.

One of Japan's most famous sights, the bridge was originally built in 1673.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.