The location of Alexander the Great’s tomb is a mystery. After Alexander’s death in Babylon in 323 B.C., his body was taken first to Memphis and then to Alexandria, where Pompey, Julius Caesar, Cleopatra, Augustus, and Caligula all visited his tomb. But by the 4th century A.D. the tomb’s location was no longer known. Egypt’s Supreme Council for Antiquities has now recognized more than 140 search attempts, but none has succeeded conclusively.