On the eastern side of Piazza Maggiore, the Palazzo dei Banchi architecturally speaking, fits in nicely with the other neighboring buildings. Characterized by a portico with a sequence of 15 arches, it was conceived of in 1565 by Vignola in response to a need to "obscure the view" of the artisans quarters to the rear and give the Piazza back its beauty. Two vaults give access to the old Mercato di Mezzo that still exists today. Admission: Guests may visit the exterior only.