Špilberk Castle in Brno, Czechia, atop a hill overlooking the city. It served being a royal castle right before being converted right into a fortress inside the thirteenth century. Špilberk was the heaviest jail in the Austro-Hungarian Empire, earning the nickname “Dungeon of Nations” for imprisoning political dissidents. *Obtainable 1st https://tour79000.wikipowell.com/5555062/flat_fundamentals_explained