Probably the only "must see" in this quaint little Bavarian town. St. Johannis Church was built in the 16th century. The tower and steeple dominate the town, but still quite small scale as compared to the great cathedrals of Bavaria.
Northern Bavaria is a great wine region, even if it might not yet be famous. I found the Franconian wines to be most enjoyable. It is always easy to spot a Franconian wine because they employ a bottle that is oval shaped at the bottom, tapering up to a normal wine neck at the top. Looks a bit like the genie's bottle if you remember the old "I Dream of Genie" series from the 60s.
Favorite thing: I don't know the answer. I was not in Karlstadt long enough to find out and I never did come across one of those tourist books that seem to be for sale in every European town and city. Add to that, Lonely Planet is completely silent about Karlstadt--not even a reference in the 912 page book! So no, I have no idea about the past occupants...maybe someone in the VT family knows.
Favorite thing: A beautiful village in the Bavarian countryside, Karlstadt will never compete for most visited spot. However, it is very nice in its own way and is every bit as romantic as its more famous neighbors on the "Romantic Road." It is more than possible to spend a memorable afternoon with a special friend exploring the half-timbered buildings or strolling along the tree-lined riverfront.
Favorite thing: The town was small but pleasant. Walked along some of the cobblestoned streets, poked our heads into shops and noticed the high water marks on the town walls facing the river.