Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

This abandoned Slovenian military barracks has become a punky-political art squat.

This one-time health resort was used by aristocrats around the world.

This massive subterranean fissure is known as the "underground Grand Canyon."

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A tomb in this cemetery holds soil from every country in Latin America.

The largest masonic lodge in Cuba.

This Cuban town sets the sky on fire around Christmas each year.

Four antique Baldwin trains are kept on display in the Mal Tiempo train depot.

A small museum in the Bay of Pigs gives the Cuban perspective on the famously failed U.S. invasion.

The enormous smoke hides within a little known, semi-secret exhibit inside Havana's Morro Castle Historic Park.

Prehistoric history as seen through the lens of an outsider artist.

Former WWI oil tanker played a variety of roles in history, its tantalizing rum-flavored scent being the only constant.

An old slave lookout in Cuba's historic sugar cane fields.

Cuba's historical trains remind natives of their country's sugary sweet past.

Roam the cradle of the Cuban Revolution with life-sized dinosaurs.

Neo-cave art on the macro scale.

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

A nuclear power plant abandoned along with an international allegience.

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

A bronze sculpture of Lenin’s likeness outside Havana surrounded by 12 human figures in solidarity with the Bolshevik Revolution.

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

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.