The legendary bathing site of a Moorish queen is actually part of a Roman fish farm.

This interactive museum highlights the history and philosophy of one of the world's most difficult sailing races.

A monument at Alicante Marina honors a little-known hero of the Spanish Civil War.

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

Bacteria and algae give the salty water its bubblegum hue.

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

An abandoned airport in the middle of nowhere.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The gaunt visage of this angular Christ giant is enough to put the fear of God into all who see it.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This Gothic church houses ornate royal tombs and a magnificent gilded altarpiece.

A landscape decorated with enormous skull sculptures.

This huge abandoned fortress hidden inside a mountain holds a world of subterranean secrets.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

Wall after wall of this French seaside neighborhood is intricately decorated with seashells and corals.

This crack in France's seaside cliffs once hid a sinister secret.

Europe's largest community of crocodiles and alligators.

These rustic holiday homes are made from discarded fishing boat hulls.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A moving memorial to the fallen and missing from WWI trenches.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.