



Domaine régional de la Boucle de Moisson
Mousseaux-sur-Seine
The Seine appears like a secret at the bottom of the valley, six kilometers in. This gentle loop threads through the Vexin's chalk cliffs, past the Château de La Roche-Guyon, and into wetlands where over 200 bird species nest among the reed beds.
Scenic river views
Nature reserve trails
Birdwatching hotspot
Gentle elevation hike
Tips
🚂train from Paris to Bonnières-sur-Seine, then walk
🦅bring binoculars for herons and kingfishers
🥖picnic spot by the water at kilometer 6
Domaine régional de la Boucle de Moisson
Mousseaux-sur-Seine




The Seine appears like a secret at the bottom of the valley, six kilometers in. This gentle loop threads through the Vexin's chalk cliffs, past the Château de La Roche-Guyon, and into wetlands where over 200 bird species nest among the reed beds.
Scenic river views
Nature reserve trails
Birdwatching hotspot
Gentle elevation hike
Tips
🚂train from Paris to Bonnières-sur-Seine, then walk
🦅bring binoculars for herons and kingfishers
🥖picnic spot by the water at kilometer 6