Pass’Découvertes de l’Ain, un pass numérique permettant de visiter 3 sites à prix malin !
3 sites au choix, hors Parc des Oiseaux : 19 €
3 sites au choix + le Parc : 31 €










Concerts, festivals, events and exhibitions, enjoyed by thousands of visitors, make Fort l'Ecluse an unmissable place to discover and enjoy... Well beyond the borders of Pays de Gex.
Perched above the Rhône, Fort l'Ecluse dominates the skyline. Dating back 700 years, it has many stories to tell. Come and discover them during self-guided or guided tours, through the fascinating scenography of the exhibition ‘Au cœur de la Cluse’ (At the heart of the Cluse) and the spectacular sound and light show "Fort l'Ecluse: 20,000 years of history ". There's something for everyone!
Thanks to its immersive exhibitions, dive into ‘Au cœur de l'orage’ (In the heart of the storm) and set off to ‘discover the lesser horseshoe bats’, the Fort's bats, and explore the temporary exhibition ‘Intuitions croisées’ (Crossed intuitions).
The summer events will thrill you: the 13th edition of the Jazz in Fort l'Ecluse festival, classical concerts by the Soloist Academy, Nuit des étoiles (Night of the Stars), and more.
And for those who want to get active, there are sporting activities: an adventure course with breathtaking views at the Upper Fort, a free-access via ferrata and hikes. Not to mention the challenge of obtaining the famous staircase diploma: climbing the 830 steps of the underground gallery that connects the Lower Fort to the Upper Fort.
Office de Tourisme du Pays de Gex - 03/03/2026
www.paysdegex-montsjura.com
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Full price: 6 € Reduced price: 4.50 € Group adults: 5.50 € Group children: 4 €. Group rate available for 20 people or more. Free with proof of age: children under 6, RSA recipients. Family rate (2 adults and 2 children): €17 Full-fare annual pass: €10 * The annual pass also gives access to the five departmental museums (Bresse, Bonnet silk, Resistance and Deportation, Revermont and Bugey-Valromey museums). - Combined ticket Fort l'Ecluse / Château de Voltaire: €12 - Pass'Découvertes de l'Ain, a digital pass allowing you to visit 3 sites at a smart price! 3 sites of your choice, excluding Parc des Oiseaux: €19 3 sites to choose from + the Park: €31 ** A full-price ticket entitles the holder to reduced-price admission to the Musée de la Résistance et de la Déportation de l'Ain.
From 13/06 to 21/06/2026 weekends between 10.30 am and 6.30 pm. From 27/06 to 30/08/2026 daily between 10.30 am and 6.30 pm. From 05/09 to 20/09/2026 weekends between 10.30 am and 6.30 pm.
Phone : 04 50 56 73 63
Email : fortlecluse@paysdegexagglo.fr
Website : http://www.fortlecluse.fr
Facebook : https://www.facebook.com/fortlecluse01/
Google+ : https://maps.google.com/?cid=7257790155729244379
On the RN 206, at the exit of Bellegarde-sur-Valserine take direction of the Pays de Gex and Geneva.
One 60-seat meeting room. Fast food on site with regional products. Refreshment bar.
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