This influential Renaissance-era library was once the haunt of kings and monks.

This Spanish shoe museum has history, has design, and has a pair of Rafael Nadal's tennies!

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

Famed architect Antoni Gaudi built this generous thank you gift to a friendly host who housed him during a job.

This ancient Spanish castle sits high upon a hilltop.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

Stunning Roman aqueduct used for 1900 years and still standing.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

Cliffside houses provide a spectacular view from their perch above the valley.

An architect transformed this abandoned cement factory into his castle-like workshop.

Bacteria and algae give the salty water its bubblegum hue.

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

This cemetery features modernist statues as strange as its name.

This semi-secret storybook hedge maze is also the oldest garden in the city.

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

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.