This simple apartment may have inspired some of the most important theories in the history of science.

Swiss vineyards in a UNESCO heritage site.

A historic observatory precariously perched at the "Top of Europe."

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

Built in the Soviet era, this cableway system still runs gondolas from Odessa down to Otrada Beach.

The medieval prince founded the first library in Ukraine at Saint Sophia's Cathedral where he was interred.

Featured in one of the most iconic scenes in cinema history.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.

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

A crumbling cathedral condemned by an earthquake.

The youngest volcano in Central America.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

A colossal statue with a controversial past, forgotten for more than 30 years.

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

Neo-cave art on the macro scale.

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

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

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.

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