A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.

This giant underground cave chamber can only be accessed through a small opening at the top.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

These termites have an large and deadly abode—impressive by day, dazzling by night.

These eerie outliers of the lightning bug family glow a mysterious blue color.

This shop for all your super spy needs hides an educational secret.

Home to items never before seen by the public.

"There's nothing there," and other lies the KGB told us.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

Huge stone depressions which may have acted as an Incan agricultural experiment.

A preserved dragon's rib that remembers the legend of the founding of the city of Atessa.

A private collection of massive steel monsters guarding a Texas pipe works.

A Cajun-style Christmas on the river also involves sky-high pyres and explosives.

Siberian whale bones stand as cairns marking location of an ancient butcher yard.

Self-mummified monk who wears sunglasses and has become a gecko hatchery.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

This ancient bridge made of stone slabs is said to be reserved for the devil to sunbathe.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.