Berlin's old airport.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

These 7,000-year-old cave paintings depict life in Neolithic Spain.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

A curious fountain that resembles a beloved character from the 1960s.

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

This portrait of Philip V is always hung upside down, in a protest three centuries in the making.

The magnificent sanctuary is Spain's first purpose-built structure of its kind.

This ancient fort has been a great insight into the Roman presence in the region.

This 47-story "M" needed 20 years to be completed

This ancient rock painting is the oldest evidence of humans’ love affair with honey.

Bacteria and algae give the salty water its bubblegum hue.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

Remnants of the rich history of fish salting in this ancient Mediterranean port town.

Peek into a cave of giant, glimmering crystals.

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

In this coastal town, the time-honored tradition of reenacting the struggle between the Christians and Moors includes the arrival of the Moorish fleet.

The legendary bathing site of a Moorish queen is actually part of a Roman fish farm.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

Fascinating exhibits of prehistoric and ancient artifacts displayed with a uniquely modern touch.

This interactive museum highlights the history and philosophy of one of the world's most difficult sailing races.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

The only museum with its curator—and her pets—buried inside.