This cemetery features modernist statues as strange as its name.

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.

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

This Roman arena once played host to bloody gladiatorial battles.

Long tunnels run under the ancient chariot racing circuit to the tower.

A sculpture of the beloved author surrounded by characters from his fairy tales.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

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

This medieval city gate is now a blend of the past and the modern world.

An Italian hillside ghost town.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

Massive galleon from a box-office bomb docked in Genoa.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

In a divided Germany, Potsdam's "central" train station was relocated to the city's southern suburbs to avoid West Berlin.

The "Prussian Versailles" that is as glorious today as when it was built.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.