Egyptian archaeologists on Thursday lifted an ancient granite temple pylon out of the waters of the Mediterranean, where it had lain for centuries as part of the palace complex of Cleopatra, submerged in Alexandria's harbor. The pylon, which once stood at the entrance to a temple of Isis, is to be the centerpiece of an ambitious underwater museum planned by Egypt to showcase the sunken city, which is believed to have been toppled into the sea by earthquakes in the 4th century.