Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

When ecosystems collide in the arid Southwest.

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

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

Canyon walls shrouded in ferns.

European castle ruins in an American state park are actually the product of death and grief.

An abandoned castle owned and ignored by Masons carries a cursed history.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

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

Rustic natural hot springs in the deciduous rain forest.

This grand gothic brewery has been pumping out suds for over a hundred years.

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

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

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

Hollowed out cedar log tubs set in an ancient towering forest.

Odd outsider art installations surround a Gold Rush-era ghost town.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.