Opava is a city in the Moravian-Silesian Region of the Czech Republic. It has about 55,000 inhabitants. It lies on the river Opava. Opava is one of the historical centres of Silesia. It was a historical capital of Czech Silesia.
Wikipedia https://en.wikipedia.org/wiki/Opava
Official Website https://www.opava-city.cz/
Coordinates 49°56'20.041" N 17°54'8.703" E