Musée de l'atelier Rosa Bonheur

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.

[2] The building was purchased in 1859 by the French animal painter Rosa Bonheur, who moved her studio there.

Aged 37, she was at the height of her popularity and made the building her home and studio for forty years, with pens for her animals in its park.

She rebuilt the château to make it comfortable and to add a vast neo-Gothic studio room with the space and light she needed.

The museum mainly consists of objects relating to Bonheur's everyday life (including a Native American costume given her by Buffalo Bill) and the building has remained unchanged since her death in 1899, other than the sale of all the paintings it once contained.