This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

These aggressively sustainable art homes look like something out of 1970's science fiction.

A cave's rare beauty held a cavernous secret hidden underground.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

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

Former villa and estate of James Deering developed to preserve native tropical forests.

Where monkeys run wild and the humans are caged.

A community of collapsing homes more than a mile out from the Florida coast.

This historical swimming pool near Miami is emptied and refilled each day with naturally filtered water.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

10,000 flowered plants bloom in the City of Roses.

The magic's in the hole!

A heavenly experience, right here on Terra Firma.

A beautiful 62-acre Catholic shrine and botanical garden.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

This giant roadside goose has been hailing travelers into a small Ontario town for over 50 years.

A historic freight system that found the true gold rush is in tourism.

A tiny wilderness cemetery commemorates the deadliest episode of the Klondike Gold Rush.

Roadside collection of 65,000 signs.

On the Oregon coast is a natural hole that seems to be draining the sea.

Only known mainland rookery of the threatened Stellar sea lion.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.