The remains of Gustavus Adolphus' horse can be seen in the City Museum. The horse was shot from under the king by one of the cannons inside the fortress, a cannon known as "The Fig". When the Swedes withdrew, the city preserved the remains of the king's horse, eventually putting the on display. It has remained thus for almost 400 years. In 1748, Adam Weishaupt, the founder of the Order of Illuminati, was born in Ingolstadt. After the French invasion in 1799 the fortress was demolished and the university was relocated to Landshut.