This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The enchanting home of an eccentric Swedish physicist and author sits in the hills of Anacapri.

The oldest botanical garden in the world that technically isn't the oldest.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

Perhaps the most scandalous statue of America's first president.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

The "lovely red Vega" of the legendary record-settling pilot.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

The largest underground pedestrian tunnel system in the U.S. mostly caters to the people working in the offices above, but provides a great, air-conditioned way to traverse the city.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

Washington's iconic carousel has a nice piece of Civil Rights history.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Believed to be the birthplace of the United States Marine Corps.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

The largest whale museum in Europe allows visitors to walk among life-size giants.