Eons ago, a rushing lava river formed this pristine passage through solid rock.

An homage to everyone's favorite prehistoric cartoon family.

Most-visited and most-photographed slot canyon in the American Southwest.

Dramatic river bend surrounds a natural red-rocked pedestal.

Rippling sand dunes frozen in the Arizona rock.

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

Taihape's claim to fame is a fictional Kiwi farmer wearing gumboots.

Ice roads, deep holes and 3,500 pounds of diamonds.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

Inhospitable caverns just beneath this island paradise offer insights into alien worlds.

In paradise, feral pigs have claimed an island all to themselves.

A popular tourist cave with a dark past.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

A hands-off space for graffiti artists to hone and display their skills.

Fantastic views and thousands of love locks.

This towering totem holds the title for the tallest in the world but only according to some.

The United States Capitol's former columns still stand.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The world's largest collection of intentionally useless inventions.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.