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

A micro-communist utopia in Spain with no police, no mortgages and full employment.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

A complimentary beverage is offered to the bodega's resident rodents every day.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

An eerie collection of the surviving structures from a past celebration of the future.

The world's largest wooden structure.

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