The world's largest flat-topped mountain.

A giant scrap metal troll rests his hands on top of a dilapidated building covered in graffiti.

The cavern’s main chamber is so vast that the Statue of Liberty could reportedly fit inside it.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The remnants of a failed socialist commune can still be found just off a California highway.

A lawless town deep in Death Valley was famous for its riches and death rate turned YouTube famous.

This rock formation named for its unique shape is one of many that call the Alabama Hills home.

A remote mine in sedimentary rock was called the richest copper ore deposit in Arizona Territory

Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

This one-room school in the tiny railroad settlement of Elgin didn't close down until 1967

In which a local geological marvel becomes a quaint roadside attraction.

This unusual rock formation in Berks County is nearly a mile long and may date from the Ice Age.

This sculpture brings optical illusion to the roadway.

The forlorn remains of a late Cold War radar installation are decaying in the Oregon desert

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

A failed piece of Orientalism has become the proud symbol of a community.

The only place in the Grand Canyon where an automobile can be driven to the Colorado River

A volcanic spur of Lake Tahoe wrapped in Washoe sacred stories and road tunnels

Everything you always wanted to know about borates is here.

Much of the spectacular canyon followed over a century ago by the Los Angeles & Salt Lake railroad is now accessible to cars.

Stroll through a wonderland of stupendous moss-covered trees.

A remote memorial to Major Michael Adams, the only test pilot to lose his life in the X-15 rocket plane program