28 km in the East of Paris, near Marne-the-Valley, the Lagny-on-Marne knew to remain a true provincial town. Around a historical Centre Town, the 20 000 Latignaciens and the inhabitants of the closest villages find all the conditions necessary to the modern life: employment, trade, services, transport, leisures... The area has many Historic monuments of which the church Abbatiale Notre-Dame des Ardents (XIII century chapel of the old Saint-Pierre Abbey).