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

This once luxurious Catskills resort is now a haunting ruin.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

Gambling, boozing, and yodeling animals cover the walls of this dive bar cum natural history museum.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

The resting place of a Civil War celebrity's amputated limb.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

A singular collection of hand-built art deco cars are held in a building with style to match.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

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

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

This abandoned Civil War fortress is slowly being swallowed by the waters of Lake Borgne.

This abandoned lighthouse looks like a rusting oil rig, but has managed to survive a number of storms.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

One man's ambition created this psychedelic log home.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.