Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Staatstheater Kassel is a state-owned and -operated theater in Kassel, Germany. A permanent theatre house already existed in Kassel during the first decade of the 17th century. It stood immediately next to the Ottoneum near the State Theatre which is now used as a Natural History Museum and is considered one of the oldest of its kind north of the Alps. Further buildings were constructed for use as public theatre venues, and in the 18th century the opera house was erected on Königsstraße, in which the singer Elisabeth Mara staged her first success and which was conducted by Louis Spohr.