Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

This cave system allegedly holds the "metallic library" of a lost ancient civilization.

Located outside Medellín, this Colombian park focuses on conservation and sustainability.

Home to 23 voluptuous and instantly lovable sculptures by one of Latin America's most celebrated artists.

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

The house that birthed The Old Man and The Sea is now a museum devoted to the old man who wrote it.

An unconventional space for art and science housed in a massive old warehouse.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Detailed facade of a brownstone in Boerum Hill.

A community theatre in Brooklyn that brings Country to New York and New York to Country.

Love is in the air along the small street in Brooklyn.

Ride the subways of yesteryear.

This innocent-looking townhome is actually a subway exit.

This eclectic sculpture garden in Brooklyn, home to a bizarre collection of art, was once a run-down junkyard.

For 20 years, local pumpkins have met their fate on the iron fence surrounding this Cobble Hill home.