The CSG is pleased to announce that the CTTA (Centre for Topos Theory and its Applications) is organizing “Toposes in Mondovì (2024),” the fourth edition of the international school and conference on topos theory. Following the previous editions—“Topos à l’IHES” (2015), “Toposes in Como” (2018), and “Toposes Online” (2021)—this event will take place in Mondovì, Italy, from September 3 to 11, 2024.