Lagny-sur-Marne, Administrative commune in Seine-et-Marne, France.
Lagny-sur-Marne is a commune in Seine-et-Marne department, situated east of Paris along the banks of the Marne River. The town stretches from the river valley up to the Brie plateau, combining historic buildings with residential neighborhoods from the 20th century.
An abbey was founded in the 7th century and grew into an important religious center after its renewal in the 10th century. During the Middle Ages, the settlement expanded around the monastery and developed into a market town on the trade route along the Marne.
The town takes its name from the Latin Latiniacum, a reminder of its Roman past. The medieval church of Saint-Fursy stands in the center with its bell tower, drawing visitors who walk through the narrow streets around the church square.
The commune can be reached by the Transilien regional train, which runs regularly from central Paris. Visitors who want to explore the historic buildings in the town center should plan a few hours for the walk.
The old town hall was once part of a convent and still shows elements of monastic architecture. A medieval fountain called Fontaine Saint-Fursy stands near the center and is used by locals as a meeting point.
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