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

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

Why have you never heard of the second most popular tourist site in New York?

This old cement mine has been used as everything from a mushroom farm to a recording studio.

This once luxurious Catskills resort is now a haunting ruin.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

This abandoned subway station can still be seen on regular commuter trips.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

From scholastic to sepulchral - now under reconstruction.

A natural gas leak provides a flickering flame beneath a waterfall.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

An abandoned castle owned and ignored by Masons carries a cursed history.

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

To avoid the demolition costs this abandoned drawbridge was simply left in the up position.

Ruins of a historic medical facility sits eerily by the water.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

The remains of an old sawmill, gristmill and the surrounding industry dating back to the 18th century.

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

It would take 35 firetrucks to fill this enormous glacial pothole.

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

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.