The Athens Olympic Park (formerly known as Olympic Athletic Center of Athens "Spiros Louis" (Greek: Ολυμπιακό Αθλητικό Κέντρο Αθηνών "Σπύρος Λούης", Olympiakó Athlitikó Kéntro Athinón "Spýros Loúis") or OACA (OAKA)), is a sport facilities complex located at Marousi, northeast Athens, Greece. The complex consists of five major venues as well as other supplementary sport facilities.