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

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A mocking tribute to the past and modern leadership of Prague.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A church of bones, decorated with 40,000 human skeletons.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This banal Parisian entranceway is not what it seems.

There has been an astronomical clock on this spot since the 14th century.

A chapel on a volcanic core, marking the end of a successful journey.

The world's largest reflecting pool is just two centimeters deep.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.