Take a tour of The Alcázar of Segovia in Spain -- part of the World's Greatest Attractions series by GeoBeats. In central Spain, a mighty, ship-like palace towers above the landscape. Segovia's Alcazar has over a thousand years of history. The current structure was designed in the 12th century. The castle served as a royal palace until the 17th century. It later became a prison, and then an artillery school. The ornately decorated Alcazar houses many halls of art and military memorabilia. Impressive architecture makes it a natural draw for tourists from around the world.