The Conservatoire des Espaces Naturels Sensibles (CENS) of the Essonne Departmental Council has protected 1,550 ha of natural sites and 2,300 km of rural trails.
Today, there are 55 Sensitive Natural Areas, 30 of which are already open to the public. 11 marked hiking trails allow you to discover the natural and cultural heritage of Essonne. Through the “Nature Rendezvous” program, the CENS offers free educational outings throughout the year, open to all.
In addition, the CENS now offers a mobile application to discover the Sensitive Natural Areas of Essonne.