Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Medical and zoological curiosities for sale.

America's most famous piece of self-built architecture.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

World's largest collection of serial killer artwork and other macabre exhibits.

The crumbling ruins of this southern American fort have survived storms, war, and cults.

Rome's ancient Etruscan rival, now a park full of ruins.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Italian cave with exceptional acoustics and an unsavory history.

Ancient snack bar of the Roman Empire re-opened.

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

One of seven Jewish catacombs in Rome and one of only two open to the public.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.