At L'Isle-sur-Serein, the river divides to encircle the tranquil little town and the ruins of its 15th-century chateau.
There is a river surrounding the town on L'Isle-sur-Serein.
mnli hypothesis: There is a river surrounding the town on L'Isle-sur-Serein. premise: At L'Isle-sur-Serein, the river divides to encircle the tranquil little town and the ruins of its 15th-century chateau.