From July 4th until August 30th, 2026, the Communauté de Communes du Pays de Valois is setting up the "Mobi bus express" bus line to facilitate access to Ermenonville, La Mer de Sable and Fontaine Chaalis from the Plessis-Belleville station (line K – Paris > Crépy-en-Valois).
This completely free service allows you to serve the tourist sites of Ermenonville throughout the summer, including the castle, the Jean-Jacques Rousseau Park and the Mer de Sable amusement park, as well as the Chaalis Abbey.
This service is particularly intended for seasonal workers at these sites, but anyone wishing to visit Ermenonville, go to La Mer de Sable or discover the Domaine de Chaalis can take the bus to their destination from the Plessis-Belleville station.
In just a few minutes, the "Mobi bus express" connects the station to the park entrance via the center of Ermenonville, offering a fast, convenient, ecological and stress-free parking solution.
