Copenhagen's celebrated theme park and gardens.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Living towers made of people that are now recognized by UNESCO.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

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

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

Neo-cave art on the macro scale.

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.

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

This small group of sand dunes manages to pack in a strange rainbow of colors.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

This grand hydraulic installation has provided water for townspeople since the Middle Ages.

Founded in 670, this ancient mosque is an architectural time portal.