It was completed in 1559 and burned down in 1564. When it was rebuilt, it was given the galleries that still face the town today. After the Counts of Isenburg were elevated to princes in 1748, they no longer used the castle as their residence but more comfortable houses in the center of the city. In 1816, they lost control of their principality. Offenbach falls to the Grand Duchy of Hesse-Darmstadt. Since the early 2000s, the palace has been used by the University of Art and Design.
While the northern façade facing the Main resembles a defiant fortress, visitors will be surprised by the view from the inner courtyard: With its graceful galleries, the south façade of Isenburg Castle is considered one of the most beautiful examples of the Renaissance north of the Alps.
