An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

The only working large-scale tea plantation in the United States.

The juke joint where legendary soul artists ate, drank, and made merry.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

There’s a special club house at the top for the bell ringers.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

When it comes to handsignals (and colonialism) rock always beats scissors.

The most accurate timepiece in the world.

A painfully obvious spy house sits right across the street from the Russian Embassy.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

At 207 feet, one of the world's longest continuous escalators.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

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

This ultra-modern burial building would have stacked the dead like a giant filing cabinet.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

As can be expected from a centuries-old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

100 year tradition of fist fights, marked by marble footsteps.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Bits of architecture from a town destroyed in World War I now decorate this hotel garden.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

For over 300 years this little carving has been the city’s good luck charm.