The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

The largest stone moai on Rapa Nui.

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

A Victorian marvel of engineering is now a 21st-century tourist attraction.

The atmospheric road was never meant to be so creepy.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

A remarkably intact castle that once was the largest in Ireland.

Obelisks and stone pineapples in the Irish countryside.

A corkscrew-shaped barn in Ireland.

Home to a seasonal waterfall and swimming hole in the Ouachita Mountains.

A roadside attraction fit for a giant.

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

Cave carved out of a huge snow drift collapsed killing one and injuring five in July 2015.

Former farm staffed by mental patients is now a public park.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

An abandoned World War II bunker is part of a chain that runs throughout Washington.

Shoreline strewn with the remains of ghostly fallen trees.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

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

Rustic natural hot springs in the deciduous rain forest.

Faces carved into the cliffs create an otherworldly walking trail.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

Rare recess caves fill this unbelievably beautiful Ohio park.