The Czech town Bohumín near the Polish border has a difficult history. The town was named Neu-Oderberg O/S. (Oberschlesien) after the annexion by Nazi Germany between 1939 and 1945 - so it is written on the postcard.
Unfortunately I don't know anything about the history of this building. But fortunately it is still in use - today as KULTURNÍ DŮM K3. It was modernized in 2006.