Built in the first half of the 19th century by Don Carlo Quesada Marquis of San Sebastiano, the palace stands on Market Street and faces San Sebastiano Square. The palace was intended for the Marquis’ second son, Don Ignazio Quesada Count of San Pietro, who became the owner in 1852.
The project was due to distinguished architects working in the city in the first half of the 19th century, such as Giuseppe Cominotti, who was then occupied with the rebuilding of the theater attached to the Civic Palace, Friar Antonio Cano, and Felice Orsolini from Genoa. Subsequent extension work was completed in 1911. The large façade on Market Street has eleven openings per floor, and the ground floor features parallel horizontal slats where entrances to large warehouses open. In the center, in mock symmetry, is the main doorway carved out of what was probably access to a tower outside the ancient city wall of Sassari, as evidenced by the ancient stone hinges still visible inside the atrium.
The interior features an imposing atrium characterized by the beautiful 19th-century painted faux stucco decorations and the beautiful 20th-century Venetian wrought floor. The pincer staircase has slate steps and leads directly to the main floor, the representative floor, which has housed the Sassarese Circle since 1875. The main floor contains the state rooms with interesting period furnishings such as furniture, chandeliers, various lounges and a ballroom of nearly 100 square meters, the largest in the city.
