 The castle was unsuccessfully besieged by the Hussites in 1432.In 1520 Wąsosz passed to the bishops of Wrocław and in 1525 it passed again under Piast rule as part of the Duchy of Legnica.After the dissolution of the duchy in 1675, the town became part of Habsburg-ruled Bohemia, in the 18th century it was annexed by Prussia, in 1871 it became part of Germany, and in 1945 it was reintegrated with Poland.