This 19th-century prison once held Irish revolutionary Constance Markievicz, writer Frank O’Connor, and a nine-year-old pickpocket.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

The ancient tomb acts as a calendar that keeps perfect time.

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.

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

A curious fountain that resembles a beloved character from the 1960s.

This architectural oddity is an oasis of green on the outskirts of Valencia.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

Vibrant street art created with mixed media.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

This house's itty bitty size means no humans allowed.

A contemporary art installation housed within a Gothic cathedral.

Ruins of a 10th century church tucked away deep in a botanical garden.

A town saturated in Italian rationalist architecture was once marshland drained by Mussolini.

A Roman temple perched over an Italian town, forgotten several times over.

Italy's only urban waterfall has enchanted artists and travelers for centuries.