L’Isle-Adam La vallée de l’Oise & Les Trois Forêts Le Paradis Vert 19 — 20 sept. 2026European Heritage DaysL'Isle-Adam & surroundingsSee the programme → 19 & 20 September 2026Heritage,open doors Sat. 19 sept. · 10h–18h Opening of the Maison des JoséphitesL'Isle-Adam — mairie : 01 34 08 19 19 Sat. 19 sept. · 14h–18h Family workshops & expo — Musée SenlecqL'Isle-Adam — rés. : 01 74 59 11 23 Sun. 20 sept. · 10h & 11h Tour of the Château Conti undergroundL'Isle-Adam — mairie : 01 34 08 19 19 2 oct. – 6 déc. 20266th edition — Auvers · Pontoise · L'Isle-AdamVal-d'OiseSee the programme → 6th ed. · 2 oct. – 6 déc. 2026The ImpressionistAutumn 18 oct. 2026 – 7 Mar. 2027 · Expo Student Perspectives — Léonide Bourges & Jules DupréMusée Louis Senlecq — L'Isle-Adam November 2026 · Photo Exhibition Impressions of Light between Sky and WaterChâteau de Conti — L'Isle-Adam 4 oct. 2026 · Cruises Impressionist Cruises on the Oise Bords de l'Oise — L'Isle-Adam ← → Current Month september, 2026 See the agenda Our brochures