Beneath its placid surface, one of New York City's primary sources of drinking water hides a haunted past.

Prank chair from an 18th-century Danish royal court shows the eternal popularity of fart jokes.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

A walkable map of the world, made from soil and stone by one man.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

In a city crazy for seashells this museum educates and amazes visitors using the wonder of cast-off exoskeletons.

The world's most comprehensive collection of Willard timepieces is a celebration of early American clockmaking.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

After traveling the world, one of the last remaining fully-rigged three masted iron-hulled cargo ship in the world found its home in New York.

A living antique aviation museum in the historic town of Red Hook, New York.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

This former coal gasification plant found a curious second life as a popular public park.

The historic bar where local ship captains, traders, and gold miners would come together to do business a century ago.

A colorful architectural gem in Seattle's uniquely modern Central Library.

Some of the earliest leaders of the Moravian congregation are buried here.

This small collection of rare books was uniquely locked up for safe keeping.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

Giant nude woman of Tijuana is also the artist's home.