From the Wikipedia page [1]
Ravensburg is a town in Upper Swabia in Southern Germany, capital of the district of Ravensburg, Baden-Württemberg.
Ravensburg was first mentioned in 1088. In the Middle Ages, it was an Imperial Free City and an important trading centre. The "Great Ravensburg Trading Society" (Große Ravensburger Handelsgesellschaft) owned shops and trading companies all over Europe.