Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

A castle built by an eccentric medieval enthusiast in rural Ohio.

Rare recess caves fill this unbelievably beautiful Ohio park.

An abandoned relic of the city's failed experiment with below ground transit.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

The world's largest fully steerable radio telescope.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

Home of a 28-foot tall stalagmite known as the War Club.

Two insane asylum bodies embalmed by an amateur.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

This shrine dedicated to the Virgin Mary is also a tribute from a mother to her fallen son.

Once the largest public hospital for the mentally ill was also surrounded by controversy.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.