Archaeologists excavating the area of the Square of the The Greater Poland uprising (Plac Powstańców Wielkopolskich) in Pleszew, Western Poland, discovered various features and artefacts, including wooden waterworks and coins from the time of Swedish invasion during Second Northern War (1655-60).
Archaeologists excavating the area by the Józef Dziąga roundabout in Mińsk Mazowiecki, Poland, discovered a graveyard. The excavations were conducted in search for a wooden church that was burnt down during the Swedish invasion in the 17th century.
Archaeologists working on the site of a forgotten Medieval castle in Sierpc, central Poland, were able to uncover remains of the castle’s walls and fortification and date its creation. The castle is said to have been built between 15th-16th century in place of prior settlements dated to 12th and 13th centuries.