"Athens, Greece, is best known for the Parthenon, the ruins of an ancient temple completed in 438 BC to honor the goddess Athena. But what many people don't know is that it only served as a temple for a couple hundred years. It then became a church, then a mosque, and by the end of the 1600s served as a storehouse for munitions. When an enemy army fired hundreds of cannon balls at the Acropolis, one directly hit the Parthenon. Much of the sculpture...