The Musée départemental breton is a museum in Quimper dedicated to the archeology and development of the arts of the Finistère area. Founded in 1846, the museum is housed in the former Cornish Bishops' palace, next to the city's Cathedral. The museum itinerary is organized according to both a chronological and thematic distribution divided into different sections: archeology, ancient arts (from prehistory to the eighteenth century) and applied arts (fifteenth-twentieth century). Within the section of Prehistory and Protohistory there are some of the most important examples of French protohistoric jewelery. The ancient section is organized around the monumental floor of the baths of a Gallo-Roman villa, and is dedicated to the Osismes population, a Gallic people whose territory roughly covered that of today's Finistère. There are monumental secular and religious sculptures, Gallic and Gallo-Roman ceramics, coins and different types of everyday objects. There are also medieval and Renaissance finds. Particular attention is paid to the art of stained glass, a tradition deeply rooted in Brittany.