This eclectic natural history collection holds everything from a bit of the trans-atlantic cable to Hemingway's marlin.

Robots, lasers, and whoopee cushions, oh my!

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

This museum on a college campus pays tribute to the Arctic and to two explorer alumni.

An unsolved murder victim's grave which may or may not contain her body.

This tiny patch of arid sand sits in one of the greenest states in the United States.

The grave of Mary Nasson is shrouded by witchy legends.

Stone monument honoring a town founder has a witch-boot shaped stain and a curse to go with it.

Naturally formed rock city in Poland.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Mysterious painted skulls in Moravia.

An underground city of salt.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The final resting place for the remains of 143 Habsburg royalty.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Baroque celebration of the end of the Great Plague of Vienna.

Handsomely crafted representations of our round planet.

The Habsburgs' royal collections of art and wonders.

A church of bones, decorated with 40,000 human skeletons.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

Two stunning 17th-century libraries and a cabinet of curiosities.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.