Sparrenberg Castle is just one of the landmarks located 0.6 mi (1 km) from central Bielefeld, so you might want to stop by for a few pics during your trip.
If you’re after a show while in the center of Bielefeld, you might want to get tickets at Theater Bielefeld. If you enjoy the show and want to see another, Stadttheater Bielefeld is just a short walk away.