Jazz beneath the vaults of Fort l'Écluse, in the heart of Pays de Gex
For over a decade, the Jazz in Fort l'Écluse festival has been inviting audiences to discover jazz and contemporary music in the exceptional setting of Fort l'Écluse, a historic fortress perched above the Rhône gorge at Léaz in the Ain department. Every summer from late June to late August, international artists performing traditional jazz, swing, gypsy jazz, gospel and blues take the stage for free inside the fortified walls, offering a unique musical experience where heritage meets nature. The festival extends beyond the fort to other iconic venues in Pays de Gex, notably the Orangerie at the Château de Voltaire in Ferney-Voltaire.
Over the years, the Jazz in Fort l'Écluse festival has become a must-attend event on the jazz scene in Ain and throughout Auvergne-Rhône-Alpes. Produced by Jazzin' Productions in partnership with the Pays de Gex urban community, it offers a series of summer concerts in the striking setting of Fort l'Écluse, a listed historic monument overlooking the Rhône gorge at Léaz.
Fort l'Écluse is a military fortress built between the 17th and 19th centuries, clinging to the cliff above the Rhône on the border between France and Switzerland. Its terraces, inner courtyards and stone vaults provide remarkable natural acoustics and an intimate atmosphere that elevates the jazz concerts. The spectacular setting, between the Jura mountains and the rushing waters of the Rhône, makes every evening a complete sensory experience.
The festival's programme explores jazz in all its diversity: traditional jazz from New Orleans, spirited swing, gypsy jazz in the tradition of Django Reinhardt, gospel, blues and contemporary jazz. Each season brings together internationally renowned artists and emerging talents, creating a programme that appeals to newcomers and jazz aficionados alike.
The festival also extends beyond the walls, with concerts held at the Orangerie at the Château de Voltaire in Ferney-Voltaire, the Golf de la Valserine and the Col de la Faucille, allowing audiences to enjoy jazz in a variety of heritage and natural settings across Pays de Gex.
True to its mission of cultural outreach, the festival offers free concerts at Fort l'Écluse throughout the summer, making jazz accessible to all. Light refreshments are available on site to make the most of the summer evenings. The off-site concerts at the Orangerie of the Château de Voltaire are offered at an affordable price, providing an intimate jazz experience.
Jazz in Fort l'Écluse contributes to the cultural life of Pays de Gex and helps promote tourism at Fort l'Écluse, a major heritage site in Ain. The festival is part of the fort's annual events programme, which also hosts theatrical performances, exhibitions and nature activities throughout the season.
The 13th edition of Jazz in Fort l'Écluse will run from late June to late August 2026 at Fort l'Écluse in Léaz. The festival will offer a new series of free jazz, swing, gypsy jazz, gospel and blues concerts in the exceptional setting of the historic fortress overlooking the Rhône, as well as off-site concerts at the Orangerie of the Château de Voltaire.
Jazz in Fort l'Écluse returns for its 13th edition from late June to late August 2026. Every Saturday evening, Fort l'Écluse will host free jazz concerts spanning all styles: traditional, swing, gypsy, gospel and contemporary.
The off-site programme at the Orangerie of the Château de Voltaire has already been announced with several events: Thésée et le Minotaure (musical tale), Volco & Gignoli (tango jazz), a Gipsy Jazz Session paying tribute to Django Reinhardt and the Pandas Royals (jazz and song). The full summer programme at the fort will be revealed in spring 2026.
The full concert programme at Fort l'Écluse will be announced in spring 2026.
By car: Fort l'Écluse is located on the Route de Genève in Léaz (01200), 15 minutes from Gex and 25 minutes from Geneva via the A40. Parking is available at the foot of the fort.
Shuttle: A free shuttle is available from Collonges for most concerts.
At Fort l'Écluse: Free concerts (fort access included on concert evenings).
Off-site (Orangerie at the Château de Voltaire): 15 EUR per concert.
Light refreshments and a bar are available on site on concert evenings at Fort l'Écluse.
Fort l'Écluse
Route de Genève, 01200 Léaz
Tel.: 04 50 42 65 00
Email: [email protected]
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Fort l'Écluse
Route de Genève, 01200 Léaz