An extraordinary mixture of natural beauty and man-made phenomena.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

This quirky curiosity shop takes its cues from the world's bazaars.

A bizarre roadside attraction and the first instance of miniature golf in the world.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Canyon walls shrouded in ferns.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

This serene oasis in an affluent Los Angeles neighborhood holds some of Gandhi's ashes and got Elvis into Eastern Philosophy.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

The trials and tribulations of marking Poe's grave.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

An abandoned stretch of highway, deteriorating next to the operational one.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Quite simply the largest tree in the world (by volume).

Oregon's unexpected high desert, displaying layers of time in a colorful show.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.