We did not visit to gamble but went during the day as part of a limited-time Magritte Exhibition that was also on the beach opposite - An interesting experience. Knokke's reason for adopting Magritte lies in the town's casino. In and '53, Magritte oversaw the production of a massive mural called. Knokke Casino is a sea-front casino in the town of Knokke, in the administrative community Knokke-Heist, in the province of West Flanders in Flanders, Belgium. The largest of Belgium's ten casinos, it is known for its artwork by Keith Haring, René Magritte and.