Cosmopoulos’ two main research areas are:
1) Greek Religion: origins, development, and ritual of Greek Mystery Cults, with emphasis on the Eleusinian Mysteries
2) Greek Society and Political Organization: origins of statehood and social complexity
This research is rooted in original archaeological fieldwork. In recent years Cosmopoulos has been directing the excavations of the Athens Archaeological Society at two major sites: the Sanctuary of Demeter at Eleusis and the Mycenaean capital of Iklaina, in Pylos. At the same time he has been working on a number of other projects in Greek political and economic history, Greek art, Classics, and Modern Hellenism. For more details please visit the “Books” and “Articles/Chapters” sections of this website.