The largest falcon hospital in the world, caring for over 6,000 feathered patients every year.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

A grassy pyramid named after a French battle.

The location of the world's first telescope demonstration.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

The largest 19th century panorama in the world still in-situ.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

A man throwing a giant severed hand towers over Antwerp’s main square.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

An open-air sewer system that was covered piece-by-piece over 300 years.

One of the deepest indoor swimming pools in the world.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

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

A historic and oft-filmed prison stands in a Chicago suburb.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

This historic spot was where America's involvement in the Vietnam War officially came to an end.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

This French colonial post office is arguably the grandest in all of Southeast Asia.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

World's largest cave was only discovered in 1991, and now offers tours to the public.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.