The Prussians, troublesome neighbors of the Piast monarchy, despite many years of research, are still one of the least known nations of this part of Europe. In the absence of new written sources, the development of our knowledge about the Prussians is possible thanks to new archaeological research. The discovery in 2005, on the border of Prussian Galindia, of a stronghold and sacrificial place in Poganowo, created the possibility of a new look at the development and formation of Prussian settlement structures and the Prussian economy in the early Middle Ages. The results of the research also indicate the unique character of this site, the only cult place known from the early medieval Prussian lands. The speech will discuss the chronology and functioning of this site in the larger settlement structure.