A stunning silver lining to global warming's gloomy cloud.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Walk 2,300 feet above the ground on the "Troll's Tongue."

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

An abandoned quarry hides an open-air gallery of huge sculptures, some made from the rubble of 9/11.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

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

An unusual house built using an iso-elastic membrane.

Leveled by an earthquake, this Italian village is now preserved as a massive concrete art project.

Italy's curious field of mud volcanoes is named for being both gross AND salty.

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.

A tree that defies gravity grows in an ancient ruin.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

The only museum with its curator—and her pets—buried inside.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

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

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

This former fascist summer camp was abandoned for decades.

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

142 ceramic steps become a mosaic once a year.