A 12th century church completely covered in shells.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

"Satisfying" is a good way to describe these beautifully aligned rows of Spanish mills.

The oldest Roman lighthouse still in use.

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

Giant topiary dog once played a role in a terrorist bomb plot.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

A submerged village appears when dam levels drop.

The final resting place of the great navigator, or maybe his brother.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

The remains of an encyclopedic sculpture garden later used as an internment camp.

This abandoned naval battery stood at the ready as recently as the 1980s.