This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

Stockholm's tiniest statue is of a small boy looking at the Moon.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

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

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

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.

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

Village situated on a narrow volcanic escarpment.

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

The world's largest wooden structure.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Week-long block party becomes a competition for the best decorated street.

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.

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

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

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

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

Strange rumors surround the artist who created these solemn metal guard dogs.

The "dragon babies" of southeastern Europe.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.