You want to discover the historic city of Lagny-sur-Marne, come and enjoy a walk to discover 19 places of the city full of history. To this end, you will be given a booklet tracing part of it. You will be guided throughout your journey. This booklet will be offered at the entrance of the Square Foucher de Careil Quai de la Gourdine in Lagny-sur-Marne.