Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

America's post-nuclear-attack chambers of Congress.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

This former fire tower found new life as a communications hub complete with a scenic overlook.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

An abandoned coal mine reached by a steep hike.

The site of the one and only battle of Lord Dunmore's War.

This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.

Two gems of Beaux Arts architecture that have been sitting vacant for years.

This California artist's front yard acts as a gallery for his unique, scrap metal animal sculptures.

The world's largest fully steerable radio telescope.

This abandoned train tunnel has been the subject of countless ghost stories for years.

A historic coal mine that doubles as a museum and tourist attraction.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

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

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Come for the speed, leave in love with the desert.

Rainbow-hued in the summer and crystalline in the winter, this salty lake has inspired battles, temples, and plenty of awe.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Despite its name, this route in southern Utah offers a heavenly day trip.

A tunnel with windows, so you don't miss out on the impressive views.