Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

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.

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

A series of five defunct panopticon prisons in Cuba.

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

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

The now-overgrown beach resort was once frequented by Yugoslav military elite.

This "floating railway" is one of the world's oldest monorail systems.