This harrowing climb along West Virginia's jagged spires is one of the only Via Ferrata on America's east coast.

The ghostly remains of what was once the world's richest copper mine.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

These cinderblock farmhouses were actually World War II radar stations in disguise.

Watch the newest land on the planet form before your eyes.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

Canyon walls shrouded in ferns.

This natural marble cave is one of only five national monuments in Oregon.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

Storms, funding, and in-fighting have kept this Bermuda church from ever being completed.

A tropical paradise once home to space exploration and military installations.

The abandoned Bermudian home of a British naval leader is surrounded by crumbling sporting fields and the graves of convicts.

The final resting place for Bermuda's British military, including a man who died of sunstroke.

The world's smallest drawbridge.

In Bermuda, this formal naval residence has become a go-to for cliff-jumpers and hikers.

Where a rare geological phenomenon created a section of rock that resembles a checkerboard.

It's safe—and permitted—to walk across these twin natural sandstone arches.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

Windswept and remote, this island was once the home of a rare mammoth and today is home to a rare tree.

This massive subterranean fissure is known as the "underground Grand Canyon."

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

The historic bar where local ship captains, traders, and gold miners would come together to do business a century ago.