A winding, cliffside stretch of road overlooking the Delaware River.

Oldest existing wire suspension bridge in the United States.

The site of the climactic scene from the classic horror film is now a historic landmark.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

This massive and unusual rock formation near Okotoks is the world's largest known glacial erratic.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

A Roman-style column in Oregon hides a spiral staircase inside.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

A toxic ghost town sitting atop a massive coal fire.

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

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Curious rock formations in a tiny Kansas state park.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."