Petersburg

The Petersburg was a fortress in the southeast of the city of Osnabrück. It existed in the first half of the 17th century during the Thirty Years' War and was intended to help enforce the Counter-Reformation in the city.

In 1618, Emperor Ferdinand II confirmed the city's privileges and the freedom of the Augsburg Confession to the city of Osnabrück. At the beginning of the Thirty Years' War, the city declared its neutrality. In October 1625, Franz Wilhelm von Wartenberg was elected Bishop of Osnabrück. Like his predecessor, he sought to enforce the Counter-Reformation in Osnabrück. In 1628, Franz Wilhelm came to the city with the Catholic League and commissioned the construction of the Petersburg fortress to strengthen the Osnabrück fortifications and as his own residence.

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