The grotto where Saint Ignatius of Loyola lived as a hermit for nearly a year.

The defensive tower was built centuries ago to warn locals of Berber pirate attacks.

This spectacular bridge is part of an abandoned train line that once connected Mallorcan capital to the southeastern coast.

Possibly the oldest masonry dam in all of Europe.

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

An elaborately decorated house sits on an otherwise quiet street.

According to tradition, King Phillip II supervised construction of the seat of his empire from this seat carved into rock.

These wooden balconies that are both decorative and functional.

Medieval ruins nestled within a breathtaking swath of Spanish nature.

Peek into a cave of giant, glimmering crystals.

Head to the mountains to catch a glimpse of Spain's endangered subspecies of brown bear.

The fragmented remains of a massive public bath connected to the city's water supply.

Open air sculptures by an eccentric and loin-clothed hermit.

Sanctuary on a ridge near an ancient shrine to a "Black Madonna" built by the founder of Opus Dei.

Marvel at this massive waterspout fueled by the incoming tide.

To fit bodies into this Renaissance crypt, they were first left to decompose in the crypt's rotting room.

The prolific artwork of a self-taught sculptor.

The abandoned club hides in the hills of Ibiza.

The world's most elegant power lines.

A curious memento mori hangs in the magnificent Cathedral of Segovia.

The mysterious remains of a martyred teenage saint are venerated inside a small country chapel.

Replicas of fossils unearthed during renovation work reveal how this area would have looked millions of years ago.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

Medieval village and microminiature museum.