Just before the end of World War II, the exhibits were hidden for fear of destruction in 80 different places in Silesia. The library collection was placed in the Herder Institute in Marburg. During the siege of Festung Breslau, the museum building was bombed and burned. After the war, the museum was moved to the former building of the Silesian Regency. The ruins were completely demolished in 1964, and in 1969 the School and Kindergarten Complex no. 13 was built on the site. The streets where the museum stood are called "Muzealna Street" and "Muzealna Square".