Visit the grave of America's most prominent paranormal investigators and self-proclaimed demonologists.

A tiny islet just off Long Island offers a wealth of infectious curiosities.

The world's largest indoor go-kart racetrack is hiding in Connecticut.

This sprawling bookstore spans four floors and has more than a million books in stock.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

The site of the Scopes Trial contains a small exhibit dedicated to the famous case.

More than five miles of underground passageways.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

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

Oldest existing wire suspension bridge in the United States.

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

A recently abandoned psych ward at the end of Sanatorium Road.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

One of the few working locomotive roundhouses in the United States.

Where the Model T was made and the assembly line was invented.

Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

Abandoned concert venue legendary for its rock counterculture.

An ornate Detroit church, left empty and ravaged by time.

This empty Detroit high school was too expensive to maintain or destroy.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

Glass and concrete building designed by Albert Kahn.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.