This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

A massive, gleaming sea turtle with a rider atop its shell looks out over the horizon.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

Once used to calculate the various levels around the country.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

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

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

Walk into an underground archeological dig, the site of the Roman Forum that was once the center of Valencia.

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

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

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

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

This mansion oasis contains gardens, sculptures, and fountains just off the busy Plaça Kennedy in Sant Gervasi.

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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

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

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

This saucy statue once caused outrage among locals.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

French sculptor Paul Moreau-Vauthier transformed the site of a 19th-century massacre into a haunting memorial.