Things to see and do - Lagny-sur-Marne
Église N.-D.-des-Ardents-et-St-Pierre : Michelin's recommendations
An old abbatial built in the 13C and incomplete due to a lack of funds. This is why the construction is limited to a chancel. Inside, see the chapel of the Passions which recalls how in 1127 the town of Lagny fell victim to a terrible disease, which was probably caused by the ergot of the rye used in the flour when food was in short supply.