Les Nuits Secrètes is one of the cultural markers of Aulnoye-Aymeries and a major summer rendezvous in the Sambre-Avesnois. The festival brings contemporary music, discovery routes and a town-wide atmosphere to a place that has built part of its cultural reputation around this event. Its name, location and audience habits are now closely linked: visitors come for concerts, but also for the experience of a northern town turned into a festival setting. The 2026 edition continues that identity over three days in July.