Palazzo Natta, facing Piazza Matteotti in the heart of the town, is the seat of the Provincial Administration of Novara and the Prefectural Offices. The building was built up by Counts Caccia of Mandello and Castellazzo, a noble Novarese family, and then passed to Natta d’Alfiano and Natta Isola di Casale family. The oldest wing of the palace is represented by the Clock Tower, known in the past as “Torre Grande” (“Big tower), already mentioned in 1268. Then, various buildings were added: the most valuable one is that ascribed to the architect Pellegrino Pellegrini, called Tibaldi, dated 1580, which shows a plan similar to that of the ancient Roman villas, with an alignment on the same axe of the main entrance, the honour court-yard and the private garden. In the course of the 18th century, the building underwent additional enlargements. The square-plan honour court-yard, surrounded by a series of Doric columns and limited by a covered walkway with barrel vault, is interesting. From this court-yard we can reach the monumental staircase leading upstairs. Wall-paintings of the painters De Giorgi and Rizzotti are shown at the first floor. The garden, which underwent a preservative restoration in 1998, is particularly valuable. At the centre there is a nice fountain in pink marble of Baveno, while a large moulded exedra of 18th-century taste, made in small black and white stones, that may recall the “rocailles” (present in the caves of Isola Bella), closes on the garden bottom and frames a not perfectly readable “trompe-l’oeil”. Moreover, some particularly valuable botanic essences, as, i.e., a bicentennial Taxus bacatum, are worth a mention.