The Caesareum of Alexandria is an ancient temple in Alexandria, Egypt. It was conceived by Cleopatra VII of the Ptolemaic dynasty, the last pharaoh of Ancient Egypt, to honour her dead lover Julius Caesar. The edifice was finished by Augustus, after he defeated Antony and Cleopatra. He destroyed all traces of Antony in Alexandria, and apparently dedicated the temple to his own cult. Converted to a Christian church in the late 4th century, the Caesareum was the headquarters of Cyril of Alexandria, the Patriarch of Alexandria from 412 to 444.