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

Abandoned bridge hidden deep in the San Gabriel Mountains.

A regular looking rock with an unbelievable history.

The home, museum, and death site of Kodak's influential founder.

An unassuming nature trail winds through dozens of tiny houses built for the wee people.

The tallest bridge in California was constructed for a project that was eventually cancelled.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

Part of a highway network meant to connect Miami to Montreal, this 10-mile stretch of road made from red bricks is still around 100 years later.

Dating to 1793, this is the oldest building in Poolesville.

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

A cemetery housing wild west legends in South Dakota.

A once grand hotel is being retaken by the wilderness it once capitalized on.

During the 19th-century, this park was a vital trading fort.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

A grove of "candelabra redwoods" deep in California's Lost Coast.

Extraordinary objects lurk in this quintessential regional museum.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

One of the oldest train stations still standing in Virginia played a vital role during the Civil War.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

A decaying garage hidden amid the dense forest is all that remains of a once-prosperous dairy farm.

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."