The monuments of Philae include many structures dating predominantly to the Ptolemaic Period (332–30 BC). The most prominent of these is a temple begun by Ptolemy II Philadelphus (285–246 BC), which he dedicated to Isis, the mother of Horus, the god of kingship. A scene in the mammisi, or birth room, where the birth of Horus was celebrated, depicts Isis suckling her son Horus in the marshes.