The park has been created to allow a green cut between the 2 urban and industrial centers of the region, Rouen and Le Havre. The Seine river flows along 180 km offering different landscapes distinguishing the 5 natural regions that compounds it :
Pays de Caux, Val de Seine, Roumois, Marais Vernier and basse Vallée de la Risle.30 itineraries are possible in the park with short or long routes, for the most athletic.