The maximum security facility was once thought to have "the bloodiest 47 acres in America."

A unique home built by Andrew Jackson Caldwell that also served as a military hospital.

Rare recess caves fill this unbelievably beautiful Ohio park.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.