Between Seine and Forest

The Loing (French pronunciation: ​[lwɛ̃]) is a 143 km (89 mi) long river in central France, a left tributary of the Seine.Its source is in Sainte-Colombe-sur-Loing, in the southwestern of the department of Yonne, and it flows into the Seine in Saint-Mammès, near Moret-sur-Loing.Its main tributaries are the Ouanne, the Aveyron, the Puiseaux, the Solin, the Lunain and the Orvanne.

The Château de By, otherwise the Musée de l'atelier Rosa Bonheur ("Museum of the Studio of Rosa Bonheur") is a museum run by a private owner, Katherine Brault, in the French department of Seine-et-Marne, on the edge of the Fontainebleau Forest. It is named after the former town of By, near Thomery. It was closed for refurbishment in 2016 but has since reopened by the Brault family in 2018.