Walking along the ancient Platha de Cotinas or Ruga de Cotinas, the current Corso Vittorio Emanuele, it is possible to take a narrow street named Santa Caterina that leads the visitor to the square of the same name, the theater of the late Renaissance church, built by the Jesuit Order between the end of the 14th century and the beginning of the 15th century. Next to the church stands an equally ancient building that during the 17th century was a college for several generations of Sassari. Today the complex, apparently modest, contains the precious art gallery of the town, considered as the largest and most articulated permanent artistic exhibition on the island. Crossing the threshold of the building you are immersed in a contemplative atmosphere, where you can admire works of a religious nature, dated between the medieval and Renaissance periods. Virgins, saints and pagan idols lead the visitor to the upper floors, where it is possible to admire the paintings of the 17th and 18th centuries that were part of the collection of our fellow Senator Giovanni Antonio Sanna. Eventually, the third floor displays the works of the major Sardinian artists of the 19th and 20th centuries, such as Antonio Ballero, Filippo Figari, Giuseppe Biasi, Carmelo Floris, Pietro Antonio Manca, Mario Delitala, Stanis Dessy and Eugenio Tavolara.