 He has excavated in North Africa, Egypt and Greece focussing on urban sites (Thamusida and Lixus in Morocco, Hephaistia on Lemnos and Dionysias in the Faiyum).In Rome, he researched with A. Carandini (northern slopes of the Palatine), in Siena (Hospital of Santa Maria della Scala), and in Bomarzo with J. Th.Peña and in collaboration with the American Academy in Rome.