A neolithic tomb converted into a tiny chapel.

This giant sculpture made of trash is a critique of society's wastefulness.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

A spectacular cave and a beguiling lake.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

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

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

This embalmed man is one of the best preserved mummies from the Canary Islands.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

Week-long block party becomes a competition for the best decorated street.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Ride a dragon train into a world of dwarves.