A diverse, expansive nature preserve in northeastern Kansas.

These otherworldly limestone formations jut out from the Kansas prairie.

The first "Hut" was actually a small brick building.

Curious rock formations in a tiny Kansas state park.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

Home to Hollywood history and a very special salt crystal.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

The fighters and conspirators that won independence for Paraguay held secret meetings at this historic house.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A little sculpture with a large wardrobe.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

Christ's blood allegedly preserved in a Belgian town.

A chilling monument to Korean patriots who resisted the Japanese occupation.

The most famous location in China was home to whole dynasties worth of imperial rulers.

An ancient fortification lives on in this Chinese city.

A life-sized imperial army, buried in battle formation, has stood underground for over 2,000 years—built not for war, but for eternity.

A crash site in the heart of polar bear territory has become a beloved local landmark.

This former outpost was designed to protect the lucrative fur trade of the 18th century.

You don't have to visit the deep blue sea to see these majestic creatures swimming wild and free.