This is the Alviset mansion, so called because the Alviset family made their home here as of the early 19th century. The mansion has a long facade on the rue des Martelots (around the corner), dating from the end of the 16th century or the early 17th century. Here, the ground floor windows are protected by superb “bulging bars” made in wrought iron (just like the ones you can see at No. 5, rue Péclet). They were probably made by a local locksmith with locally produced iron. Franche-Comté was a significant metal producer from the 15th to 19th century, and the many balconies, window bars and staircase railings you can see in the city, attest to this. The Alviset mansion is an invaluable heritage because it still has its courtyard, its service wing, its stables and sheds, and also has one of the largest gardens in the city.