Optimundus accompanies Jos de Gruyter & Harald Thys’s major exhibition at M HKA of the same title—the term they use for their particular conception of the parallel world. Narratives and criticism by Michael Van den Abeele, Nav Haq, Jennifer Krasinksi, Dieter Roelstraete, and artist Peter Wächtler are presented along with photos, drawings, and text illustrating the unsteady barriers and tense contact between Optimundus and the real world.