America's Most Wanted's set resides in this tribute to the history of crime and punishment.

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

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

Established in 1937, the oldest candy shop in New York City boasts a rainbow-colored inventory that would make Willy Wonka envious.

Salute the leader of the proletariat.

A hidden "place of interment for gentlemen."

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

Hear the tales of New York's most notorious criminals.

Cryptic messages embedded in the New York City sidewalk.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Watch butterflies take flight before you fly.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

One of Serbia's oldest luxury hotels and a nostalgic echo to Yugoslavia in the state's former capital.

A pair of connected skyscrapers form this symbolic gateway.

A medieval church built up to defend its village.

This snug medieval lane is one of the narrowest streets in the world.

This massive underground salt mine now holds a sci-fi theme park in its depths.

This wildlife refuge is home to more than 200 species of birds, as well as monkeys, lizards, and other wildlife.

Sloth rehabilitation center in the jungle of Costa Rica.

This group of small islands on Lake Nicaragua formed after an eruption of the Mombacho volcano.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.