La Coupole d'Helfaut is a history center and 3D planetarium in a former World War II bunker, which had a project to launch V2 rockets on London. Today, its galleries and concrete dome house a museum to pass on to future generations.
In November 2023, the Saint-Omer and Aire-sur-la-Lys tourist information offices were awarded the national Qualité Tourisme (TM) mark in line with the quality approach.