The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Mysterious glowing orbs float through the desert night.

A Prada store in the West Texas desert that is never open for business.

What is the Thing?

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A sprawling collection of over 106,000 toys from around the world.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

This strange geological landscape erupts with sudden bursts of water.

Tubing through a cave lit with glowworms is a magical underground experience.

An exquisite tunnel of cascading flowers.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

An ancient stone fortress considered by many to be the eighth wonder of the world.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Collect holy water from a Bronx grotto.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

The largest earthwork effigy in the world.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

A miniature world of concrete and stone in Springfield, Ohio.

World's largest working waterwheel has been around for over 150 years.

A curious collection of mechanical moving figures.

Experience park where visitors are told to expect the unexpected.

Bell tower juts out from a village buried under a lake.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

A unique attraction and museum dedicated to exploring iconic roadside structures.