A series of well-preserved ruins show the culture of the ancient Benehoaritas people.

This small Spanish village is home to dozens of public paintings meant to trick the eye.

This abandoned viewing platform has become a monument to unnecessary government spending.

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

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

Salaguti's live-in museum: a fortress against criticism and consumer art.

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

Living towers made of people that are now recognized by UNESCO.

This ancient amphitheater was restored in the early 1990s.

A pre-Hispanic pyramid in the middle of a tourist district in the Canary Islands.

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

Possibly the oldest masonry dam in all of Europe.

An abandoned airport in the middle of nowhere.

This Canary island is a quintessential example of nature’s beauty, and its unbridled fury.

Walls of stone rise up from sinkholes caused by underwater erosion.

The world's most elegant power lines.

This ancient Visigothic church might hide an ancient treasure.

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

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

The 20th-century church looks like a rustic version of the Sagrada Familia.

The largest salt farm in the Canary Islands is located at the foot of an active volcano.

Sample Spanish wines under frescoes in a historic monastery of "barefoot old men."

This stop on the Camino de Santiago stands high above the underwater ruins of a medieval town.

Indigenous cultures believed all life would end if this enormous rock toppled.