Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Pompeii's less famous neighbor is still revealing her secrets.

Where commuters walk through remnants of an ancient Greek necropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

The hallucinogenic center of the ancient world.

This replica of the Greek structure is in the heart of Nashville.

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

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

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

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.

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

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

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

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

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

This shrine to film's most iconic wasteland wanderer is located in the very outback where the movies were shot.

Twelve sculptures designed to make their best showing with the coming or going of the sun.