Old buildings
I strongly recommend that you walk up and down the old town to look at the various old buildings. You can get a folded leaflet at the tourist office at Hauptmarkt 33 with a map and the sights in German. I don't know whether they have the same in English.
What I noticed in various tourist offices around Thuringa is that you have to pay for brochures and/or leaflets. Best is to grab in previous towns the stuff for your next destination or ask for it at the big tourist office of Thuringa in Erfurt.


Waisenhausgaesschen
Museum der Natur
north facade
Viba goodies