Pompey's Pillar is a Roman triumphal column in Alexandria, Egypt, and the largest of its type constructed outside the imperial capitals of Rome and Constantinople. The only known free-standing column in Roman Egypt which was not composed of drums, it is one of the largest ancient monoliths and one of the largest monolithic columns ever erected. The monolithic column shaft measures 67 feet (20.46 meters) in height with a diameter of almost 8 feet (2.71 meters) at its base. The weight of this single piece of red Aswan granite is estimated at 285 tons. When you include the base and capital, it is 88 feet (26.85) tall, just over half the width of a football field or 12 stories high. In the middle ages the Crusaders mistakenly believed that the ashes, or the remains, of the great Roman general Pompey were in a pot at the top of the column. Thus today it is called “Pompey's Pillar”. Erroneously dated to the time of Pompey, the Corinthian column was actually built in 297 CE, commemorating the victory of Roman emperor Diocletian over an Alexandrian revolt. The size and weight of the column (it is really huge up close) is probably the reason it has been preserved from antiquity.