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

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

European castle ruins in an American state park are actually the product of death and grief.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

A Building for Your (Former) Funerary Needs.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

An enormous natural sandstone bridge in Kentucky.

Another in a long tradition of legends regarding infernal seats.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

One man's vision and a labor of love of many.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

Home with Gothic windows featured in a famous painting.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

A real flying saucer, contracted by the U.S. Air Force.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

This moving cemetery sphere is a slowly rolling stone.

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

This shallow cave got its name from copious amount of human bones found inside.

Deep scars on the earth left by the Ice Age.

Strange physical sensations and optical contradictions keep visitors coming back for more.