Sound and light show and fireworks at COSOM
The municipality of Linas, in Essonne, offers an extraordinary celebration each year for the National Day, blending a cultural show and fireworks. This unique format, developed over the years, makes the evening of July 13th in Linas an event anticipated well beyond the municipal borders.
The highlight of the evening is a sound and light show performed by the Troupe du 14 Juillet, which each year chooses an inspiring literary or historical theme to stage a spectacular visual and sound fresco. In 2025, the troupe chose to illustrate Victor Hugo's Les Misérables, taking spectators into 19th-century revolutionary Paris through a luminous and musical narrative. This thematic choice, rooted in national history, reinforces the sense of republican commemoration.
At 11:45 PM, the fireworks display offered by the Town of Linas concludes the evening in a deluge of colors and lights. Fired from the COSOM site, it illuminates the sky of the Montlhéry plain and is visible from several surrounding towns. This fireworks display is the culmination of an evening rich in emotions.
The festivities take place at COSOM, 9 rue de Carcassonne in Linas. This sports and event complex in the town has vast outdoor spaces to accommodate the many spectators who come to enjoy the evening. Access is completely free, and donations are welcome to support the troupe's activities.
Linas is world-renowned for hosting part of the legendary Circuit de Montlhéry (Autodrome de Linas-Montlhéry), a major site for motorsport since 1924. This international fame contrasts with the modest size of the town of about 5,500 inhabitants, which nevertheless knows how to organize quality cultural and festive events.
Linas is renewing its original formula on July 13, 2026: a thematic sound and light show by the Troupe du 14 Juillet and fireworks offered by the town at COSOM. The 2026 theme will be announced soon. Free admission.
COSOM, 9 rue de Carcassonne, 91310 Linas
By car: N20 or D118 towards Montlhéry / Linas. Parking available around COSOM.
By public transport: RER C station Linas-Montlhéry, then bus or walk.
Free admission. Donations appreciated for the Troupe du 14 Juillet.
Linas Town Hall: www.linas.fr
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COSOM
COSOM, 9 rue de Carcassonne, 91310 Linas