This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

A spiritual vortex among the red rocks in Sedona.

A Wild West jailhouse that slid down the mountainside.

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

This magnificent Cincinnati graveyard is also a popular public park.

What is it about mushrooms that makes people wish they lived inside of them?

An art deco ice cream shop covered in vintage train station tiles.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

The prototype for all Nazi concentration camps.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

The yawning maw of this pagan visage is said to bite off the hands of liars.

Climb to the top of the world's largest seated bronze Buddha.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

See massive fossils that are over 200 million years old in northeastern Arizona.

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

The world's longest known cave system.

The Uros people live on floating reed islands in lake Titicaca.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.