Since 2015, the research team of the Research Centre for Late Antique and Early Medieval Culture of the Institute of Archaeology and Ethnology of the Polish Academy of Sciences, led by Prof. Sławomir Moździoch has been conducting excavation research in Sicily. The research aims to determine the importance of the Normans in forming the cultural face of medieval Europe. In 2015, excavations began in the area of the medieval monastery of Santa Maria di Campogrosso in the Palermo area in close collaboration with the researchers of the Soprintendenza ai Beni Culturali ed Ambientali di Palermo. The second site studied is the medieval castle of Castello dei Tre Cantoni in Scicli. In this case, the Institute's research partners are Soprintendenza per i Beni Culturali ed Ambientali di Ragusa and the University of Catania. Students and researchers from the University of Opole also participate in the excavation work. The excavations of the Santa Maria di Campogrosso monastery led to uncovering of many previously unknown structural elements of the monastery church and the churchyard. The radiocarbon dating of human skeletal remains, lime mortar from the church walls, and the analysis of a rich assemblage of coins have established the chronology of the church's construction to the 2nd half of the 12th and the beginning of the 13th century. It undermines both the theses of historians (Fazello, Pirri), who consider the church to be the work of the first Norman rulers in Sicily and those of architectural historians (Schwarz, Guiotto, Di Stefano), who conclude, based on the form of the surviving walls, a later - 13th to 14th-century chronology.

The second issue investigated was the problem of the relationship between the community of monks and the Islamic population. Preliminary excavations in the cemetery backfill uncovered part of a tombstone with an Arabic inscription, probably from a destroyed Muslim Arab cemetery. Fragments of pottery produced in Arab workshops confirmed the monastery's intensive economic links with the rural hinterland. As a result of the acquisition of numerous material sources and their analysis, a hypothesis was formulated that the Latinisation and Christianisation of this part of the island after the Norman Conquest were faster and more thorough than assumed in the historical literature. It is indicated, among other things, by the pronounced Western European cultural influences evident in the church's architecture, the patterns of which can be traced back to France, perhaps even to Normandy (Saint-Céneri-le-Gérei). Thanks to non-invasive surveys carried out by GPR and magnetic and electrical resistivity methods, unknown remains of the walls of the former monastery were also discovered.

In 2018, research began on the Castello dei Tre Cantoni (Castelluccio) in the village of Scicli, in the southeast of Sicily. Until now, no extensive archaeological work has been carried out at the site. The excavations aim to establish the chronology of the site and determine the nature of the functions performed by this castle over the centuries. The research uncovered the remains of a medieval building workshop - a lime kiln and a lime preparation pool. Radiocarbon analyses of the mortar allowed the date of its construction to be set in the 14th century. In the same period, the castle walls were rebuilt. During preservation work on the castle walls in 2019, fragments of rooms on the south side, most likely used as crew quarters, were unearthed. They were documented in detail using both photographic and laser scanning. The results of the historical literature study to date and the preliminary results of the non-invasive research and excavation allow us to assume that Castelluccio Castle was built on the initiative of Norman rulers and was associated with the state administration of rulers of successive dynasties until the earthquake of 1693.