Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

This former asylum for Black Americans is haunted by its history of violence and racism.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

Forgotten under the construction of a new urban roadway is a small, abandoned part of town.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

An abandoned convention space that has been left to the homeless and the radical.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

An abandoned car and strange wooden debris are among the scattered remains of the old sand and gravel quarry.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The remains of a ruined mansion memorialize the 1906 earthquake.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

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

An enormous overgrown greenhouse teeming with graffiti and wildlife.