Southern Italy's spinning top village.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

Four-story concrete hotel never opened to customers.

Colorful boxes placed over the dead are left to rot and crumble.

60 feet of towering steel balances gracefully.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

A ghost town at the airport is now a refuge for blue butterflies.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

A museum in the former home of Marxist revolutionary Leon Trotsky.

The only castle in North America to ever house European sovereigns.

Frida Kahlo's childhood home, now a museum of her life and works.

The first hospital in the New World.

This replica medieval European village in the Dominican Republic was built by a Hollywood set designer.

This former sugarcane transport tunnel is now a portal to a lovely beach.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

The world's second largest single-dish radio telescope, once used to contact E.T.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.