Essonne castle

This keep in Essonne is a miniature replica of Philippe Auguste's medieval Louvre.

Did you know? The keep of the Château de Dourdan, in Essonne, was built on the same model as Philippe Auguste’s medieval Louvre. Just 44 km from Paris, this listed monument is open to visitors year-round.

This medieval tower, offering a breathtaking panoramic view of Essonne, was once used to measure the speed of light.

Perched atop a 30-meter-high hill, the Montlhéry Tower offers a breathtaking panoramic view of Essonne and the Île-de-France region. This historic medieval relic, officially listed as a Monument Historique, once served as a laboratory for some of the greatest scientists of the 19th century. Whether you're interested in its history, planning a visit, or just taking a leisurely walk, here's everything you need to know.

The Château de Saint-Jean de Beauregard and its Remarkable Garden

The Château de Saint-Jean de Beauregard, located in Essonne in the Parc Naturel Régional de la Haute Vallée de Chevreuse, is a remarkably well-preserved 19th-century château classified as a historic monument. Visitors flock here to discover the grounds, and in particular the Potager, which has been awarded the Jardin Remarquable label.

The Château and estate of Courances and its superb gardens

The Domaine et Château de Courances, located in the Gâtinais region of Essonne (91), is a wonderful place to discover. Classified as a Historic Monument and Remarkable Garden, this site welcomes you every weekend and public holiday from April to early November. We take you on a tour of this verdant haven of peace.