A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

Red, white, and blue painted steps along with a Union Jack celebrate the outcome of Gibraltar's 1967 referendum.

Single runway interrupted by a busy road that cuts across its middle.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Visit 17th-century ruins on a strikingly beautiful riverside walking trail.

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

A centuries-old house, once part of the wall of Granada, sports musket barrels from the battlements which allude to its original owner.

A museum dedicated to the centuries-old cave dwellings that housed marginalized communities on the outskirts of the former capital of Muslim Spain.

This 130-year-old, steam locomotive represents the Spanish industrial and agricultural boom of the late 19th and early 20th century.

A thorough look at the development and history of the underground's rolling stock of the Madrid subway system.

An otherworldly art experience.

This ancient amphitheater was restored in the early 1990s.

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

According to tradition, King Phillip II supervised construction of the seat of his empire from this seat carved into rock.

The discovery of these rare, ancient artifacts led to the creation of a new museum.

This 15th century pharmacy displays a beautiful collection of ancient medicine jars.

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

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

This historical manor is complete with a magnificent garden.

This site is both a remarkable reminder of the town's mining history and a fantastic government blooper.

Long tunnels run under the ancient chariot racing circuit to the tower.

The fragmented remains of a massive public bath connected to the city's water supply.

The extensive relics of an ancient Roman and Phoenician fish processing plant hide in a town park.