During World War II Neusalz was the site of a labor camp belonging to the Gross-Rosen concentration camp . German troops destroyed the concrete bridge on 9 February 1945 , but the Soviet Red Army entered Neusalz on 13/14 February 1945 . A number of buildings burnt down , including the Catholic Church . The town was placed under Polish administration according to the post-war Potsdam Conference and renamed '' Nowa Sól '' - a calque of its original German name . Germans remaining in the town were expelled and replaced with Poles
Potsdam Conference
Potsdam Conference
Nowa Sól