The town was made into a stronghold by the Nazi government in 1945 during World War II . Glogau was besieged for six weeks by the Soviet Red Army , which left 98 % of the buildings completely destroyed . After the Yalta Conference , the city , like the majority of Lower Silesia , was given to Poland , and its German population expelled . In May 1945 the first Polish settlers came to the renamed city of Głogów to find only ruins ; the town has not been fully rebuilt to this day . The town started to develop again only in 1967 , after a copper foundry was built there . It is still the largest industrial company in the town
Yalta Conference
Yalta Conference
Głogów