This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The world's only museum devoted to the wonders of fluorescence.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Remnants of a storybook amusement park hidden behind a strip mall.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

An original apothecary from 1792.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The site of the climactic scene from the classic horror film is now a historic landmark.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

A Civil War Museum with some notable medical antiques.

Bizarre Cavern.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.