Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Giant topiary dog once played a role in a terrorist bomb plot.

The Gaudí-inspired building that was the start of Terrassenc modernism.

This ancient Spanish castle sits high upon a hilltop.

The oldest Roman lighthouse still in use.

A Romanesque tower appears when water levels drop.

An early 20th-century bullring converted into a modern shopping center.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Stunning Roman aqueduct used for 1900 years and still standing.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Village situated on a narrow volcanic escarpment.

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.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Mountain where Jesus was first tempted by the Devil.

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

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

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

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

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

On the cliffs of São Jorge in the Azores stand the remains of a lighthouse that was struck by a series of earthquakes.