A cozy bookstore and coffee shop in the heart of Cartagena's Old City.

This old-school café is famous for serving coffee, chilaquiles, and the Cuban Revolution.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

A museum dedicated to Nantucket's legacy as the "graveyard of the Atlantic."

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

Colorful clay cliffs tower over an unofficial nudist beach on Martha's Vineyard.

The scarce remains of a sunken ship peek out from the sand on East Beach.

The world's only museum devoted to the wonders of fluorescence.

Incredible labyrinth of man made caves.

Museum preserving torture methods from the past.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This abandoned ironworks was once the most important military supplier in America.

Tucked away in downtown Westerly is America's first shark history museum.

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

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

This historic train station has been converted to a locomotive themed hotel.

More than five miles of underground passageways.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The once great capital of Egypt now crumbles forward as evocative ruins.

This ancient structure is widely thought to be the oldest intact pyramid in the world.