Originally planted by the ancient Carthaginians, this sprawling palm grove is one of the largest in the world.

The magnificent sanctuary is Spain's first purpose-built structure of its kind.

This exhibition space designed to look like the skeleton of a whale is hidden underground.

This air raid shelter from the Spanish Civil War is now a museum dedicated to the history of the city's bombardment.

A dictator's failed public works project has been reborn as two linked trails through spectacular scenery.

If you like Art Deco you will love this bridge.

Vibrant street art created with mixed media.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

This ancient tunnel is one of the most important examples of Roman hydraulic engineering in Spain.

These magnificently sculpted tombs represent Spain's own legendary version of "Romeo and Juliet."

One of the oldest and largest wooden churches in France was very evidently constructed by shipbuilders.

An art-filled botanical garden and former dyeworks hiding in plain sight.

This mountaintop mariner’s church is packed with model ships and nautical art while hosting an annual maritime festivity for the townsfolk below.

The sunken structure looks like the victim of a catastrophic flood.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

A massively oversized measuring tape sculpture sits inside a hidden yard.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

Abandoned Nazi train station turned underground astroparticle laboratory.

The streets of a sleepy Spanish town proudly exhibit some of the world's finest graffiti.

A botanical garden full of thought-provoking contemporary sculptures.

A statue of a boy looks up at where the famous rival to the Leaning Tower of Pisa once stood.

Of course Salvador Dalí lived in a castle...

This rare aquatic phenomenon is one of the more accessible tidal bores in Morecambe Bay.