The opening hours of Château du Haut-Koenigsbourg vary throughout the year. The castle is open every day: Apr, May & Sep 09:15-18:00, Jun-Aug 09:15-18:45, Mar & Oct 09:30-17:45, Nov-Feb 09:30-12:00 & 13:15-16:45. On Mondays the castle opens from 10:30am.