A fortified city, home to a remaining population of five families

One of the most spectacular canyons in the world.

Morocco's Argania trees are infested with nut-hungry goats.

Vast stretch of tide-pools with a unique Moroccan charm.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

Electrical pylon in the shape of Disney's beloved mouse.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

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.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

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

A Cuban artist reclaimed his impoverished neighborhood as a dreamy folk art kingdom.

Neo-cave art on the macro scale.

This subterranean disco dance club in a Cuban cave comes with bright lights and a dark legend.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

A 125-meter long "tribute to the Brazilian people."

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

A beautiful young girl said to have been buried alive in her coffin…

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.