There is a parking place and you can go around and take some pictures…read more.
What I've found about the place: "As a prison and working house the building became in 1724 for just 200 prisoners. It was finished in 1735. Many rebuildings as well as cultivations followed during the years from 1860 to 1994. In the meantime, Bayreuth JVA has three partial institutions separated spatially from each other.
The institution for prisoners itself in the first execution it is responsible for a penal duration of one year till eight years as well as for pretrial detention."