An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Stroll through a wonderland of stupendous moss-covered trees.

Enormous lake at the bottom of a unique cave system.

A submerged archeological park still holds the wonders of a Roman Sodom.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Rising from the sea like a stone monster.

Macabre astrological automaton clock dating to the late 1400s.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

The seamy, underground secrets of Portland's criminal past.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

The ghostly remains of an accidental sea.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A trash dump made beautiful by nature's power.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.