The keep

Le Château Fort de Nemours, l'un des seuls château de ville d'Ile-de-France, rouvre ses portesLe Château Fort de Nemours, l'un des seuls château de ville d'Ile-de-France, rouvre ses portesLe Château Fort de Nemours, l'un des seuls château de ville d'Ile-de-France, rouvre ses portesLe Château Fort de Nemours, l'un des seuls château de ville d'Ile-de-France, rouvre ses portes

This fortified castle in Seine-et-Marne, one of the few urban castles in Île-de-France, reopens its doors.

A rare urban medieval castle in Île-de-France, the Nemours Château-Musée reopens on 11 April 2026 with the exhibition "Water Landscapes," bringing together paintings, etchings and sculptures that explore the theme of water in art.
Donjon de Houdan - IMG 4857Donjon de Houdan - IMG 4857Donjon de Houdan - IMG 4857Donjon de Houdan - IMG 4857

In Yvelines, you can climb to the top of this tower for a sweeping view of the medieval town.

Rising 25 metres above the Yvelines, Houdan's keep hides a history as solid as it is unusual. A survivor from the 12th century, this stone colossus weathered demolition by being transformed into a functional water tower for nearly a century. An architectural curiosity that today offers an exceptional panorama of the medieval town.
Le donjon de Maurepas dans les YvelinesLe donjon de Maurepas dans les YvelinesLe donjon de Maurepas dans les YvelinesLe donjon de Maurepas dans les Yvelines

The only medieval keep with buttresses in Île-de-France is located in the Yvelines.

In Yvelines, at Maurepas, the remains of a 20-meter-high cylindrical keep stand as the sole remnant of a medieval fortress from the 12th century. Recognized as a historic monument since 1926, it still holds the secrets of a turbulent past. Here’s the story.
Houdan, ville médiévale et balade historique dans les YvelinesHoudan, ville médiévale et balade historique dans les YvelinesHoudan, ville médiévale et balade historique dans les YvelinesHoudan, ville médiévale et balade historique dans les Yvelines

Houdan, medieval town and historical walk in Yvelines

Just a Navigo ride away from Paris, in the Yvelines department, you'll discover the medieval town of Houdan, with its surprisingly well-preserved medieval remains, including a keep, ramparts and old inns.