The Marais de la Léchère presents a wide range of wetland environments and a remarkable array of heritage species. This marsh is home to a particularly rich flora and an original fauna for this portion of the Isère which has undergone numerous and important transformations over the last 50 years.

More information on their website

And if I go by bus ?

Take the line T15 Pont de Cheruy-Bourgoin Jallieu and get off at the stop "Place du Dauphiné" in Tignieu-Jameyzieu.