Crumbling ruins mark the site of a couple's grisly murder in the woods.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

One of the few surviving "Wigwam"-themed motels.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

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

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

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

This underwater old Texas hill town only resurfaces during harsh drought.

DIY collection of eclectic holdings.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A popular swimming hole that hides one of America's most deadly diving spots.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

World's first "penitentiary," meant to be humane, drove men insane.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

Series of storm drains connected to a dark urban legend.

A world-class collection of mechanical musical instruments and automata.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.