Under the title "ALLEINSAM", this year's OPEN OHR Festival at Whitsun is dedicated to the social, political and health-related causes and consequences of loneliness. From May 22 to 25, 2026, the Freie Projektgruppe and the Office for Youth and Family of the City of Mainz invite you to come together at the OPEN OHR Festival and turn the Mainz Citadel into a place where no one is left alone with their loneliness.