Tucked behind New Jersey's abandoned Gingerbread Castle lie the eerie ruins of a once-flourishing paper mill.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

The world's largest fully steerable radio telescope.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

A terrific purveyor of natural history objects and curios.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The most unloved grain elevator in Brooklyn was a “Magnificent Mistake.”

Entering this curiosity shop is like stepping into a mad scientist's lab.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This frequently-photographed waterfall takes only a short hike to visit.

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

An iconic location along the Los Angeles River where countless movie scenes are filmed.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."

The mysterious round rocks of Schooner Gulch.

A trash dump made beautiful by nature's power.

This massive redwood tree has a hole in the base big enough to drive through.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Canyon walls shrouded in ferns.