The frescos in the artillery halls are the work of various artists. Painter Hans Wulz, for instance, created the fresco titled Seizure of Utrecht by Maximilian I for building 17; portraitist and military painter Hugo von Bouvard decorated building 2 with illustrations of the medieval army and transportation systems, various military vehicles, and means of carriage from the Maximilian era. The opposite hall of the artillery hall in building 2 was designed by Arbert Janesch with the help of contemporary references from Jörg Kölderer's "Artillerie Maximilians I".