Located in the remote Monitor Valley, this travertine bowl contains a scalding pool of water.

This central Nevada cave is the spiritual home of ancient and enigmatic pictographs.

US-50 in Nevada is known as "the Loneliest Road in America," but this earlier iteration of the route is even lonelier.

Only intact Ichthyosaur skeleton in the United States.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Yo, Adrian!

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

A unusual sanctuary for abused and exotic animals in South Jersey.

How this Pine Barrens hill got its name is uncertain, but on a good day the view from the fire tower is crystal clear.

Rising out of a clearing in New Jersey's Pine Barrens is an Aztec-inspired monument to the "Lindbergh of Mexico."

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

New Jersey's last historic covered bridge was rebuilt from pieces of the original 19th-century structure.

A toxic ghost town sitting atop a massive coal fire.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

This demolished goliath of American industry once loomed over the depressed town it once made thrive.

This jail which was in service for over a century is now open for curious visitors.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.