A Buddhist temple to honor insects that died for science.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Eerie ruins of an abandoned medieval fishing village crumble atop an unforgiving stretch of earth.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Rebuilt remains of a temple to Roman god Mithras.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

A museum dedicated to the alleged Roswell Incident.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Dr Barnes' $25 billion private collection of art and arboretum.

A gregarious Ohio resident has been building his whimsical temple to peace for decades.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

The largest drain hole in the world.

Legend says these rocks used to be hunting dogs, a story that may have inspired Sherlock Holmes' most famous case.

Catacombs turned marketplace.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

Hidden beneath the streets of London is a secret subway that only carried mail.

A beautiful geyser under environmental threat.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.