The Main Square Festival returns to the Citadel of Arras (UNESCO) from July 3 to 5, 2026. 120,000 festival-goers expected. Friday: Katy Perry and Charlotte Cardin. Saturday: Orelsan and Marshmello. Full Sunday (Twenty One Pilots, Vald).

The Bastion stage is open to emerging artists from Hauts-de-France (applications until April 15).

Source: mainsquarefestival.fr