The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Amsterdam's Red Light District leaves little to the imagination.

A monument celebrating the idea of reaching inaccessible places.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

The only arched bridge made of stone on the entire Mississippi River.

This strange geological landscape erupts with sudden bursts of water.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

The shortest in the world, this landing strip stretches a mere 1,312 feet before steep cliffs on either end plunge into the Caribbean.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

This nightmarish children's plaything was left grotesque to help kids conquer their fear.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The home of the Dead Sea Scrolls is an abstract modernist dream.

A shrine contains nearly 200 statues of the Buddhist deity Jizo, dressed in bibs by parents who have lost a child.

1,001 carved statues of the Buddhist God of Mercy, each with a unique face.

The 10,000 Torii shrine.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A small, but award-winning beach known for its literally spotless reputation.

Come for the flowers, stay for the bats!

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

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

This angular brutalist playground turns playtime into modern art time.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

An underground magnet for ever-changing street art.

Beside some power panels, a plaque celebrates the history of an alternate world.