 The city was briefly renamed "Zielonogóra" in 1945, before the historic Polish name "Zielona Góra" was restored.The 18th-century Protestant church was reconsecrated as a Catholic church ("Kościół Matki Boskiej Częstochowskiej").The city's first post-war mayor was Tomasz Sobkowiak, prisoner of the Auschwitz concentration camp during the German occupation of Poland, remembered as an efficient administrator, with a friendly attitude towards Germans.