Protecting the future of some of the rarest and most misunderstood mammals of North America.

American artist J. Alden Weir purchased this 60-acre estate for $10 and a painting.

Home of Philip Johnson, one of the 20th century's most influential architects.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Suffocating dogs was a common spectacle in the fumes of this noxious cave.

This magical-looking island is notorious for the misfortunes suffered by its owners.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

One of the earliest depictions of an Arthurian scene that is shrouded in mystery.

This enormous sinkhole hides a secret world created from divine wrath.

For decades, vendors have sold clothes once worn by American soldiers who stormed Italy in the 1940s.

A medieval wash house where people washed clothes in a river allegedly formed by the tears of a mourning nymph.

The "Mona Lisa" of funerary art.

This peculiar Italian elevator runs both horizontally and vertically.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

The underground sanctuary of a mysterious ancient Roman religious cult contains an exquisite traditional fresco.

The pristine waters crossing this forest form a hidden waterfall among the dense vegetation.

This tiny islet has somehow housed an ancient temple, two monasteries, a church, a fortress, and a restaurant.

Take a giant yellow bird cage to the top of Elba's highest mountain.

The now-abandoned Fascist summer colony served a dark purpose during World War II.

An extraordinary house museum and cabinet of curiosities in the heart of Florence.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

A visionary Italian architect created an impressive cluster of concrete structures for a family's private tomb.

Windblown rock formations in an ancient Roman quarry.