This supermarket is suspended 25 feet above an interstate highway.

Tucked in the back of this amazing antique store is an important piece of medical history.

Elevated freight railway turned wildly successful urban park.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Paris' linguistic guide to the international language of, yes, love.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

This bridge was constructed from the rubble of the infamous Bastille.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

A huge musical instrument played by the ocean.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Legends surround this jagged rock formation in the New Mexico desert.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

This modest marker near Notre Dame identifies the very center of Paris.

The first green space constructed on an elevated viaduct.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

See massive fossils that are over 200 million years old in northeastern Arizona.

A motel dedicated to Southwestern nostalgia.

The remains of this hell for leather wild west town can still be found in the Arizona desert.