Continuing along Via Carducci you arrive at Piazza de' Amicis, which overlooks one of the most elegant buildings in the city, the Attems-Petzenstein palace.

Built starting in the early 18th century by Gianfrancesco and Sigismondo Attems, it is traditionally attributed to the Gorizia architect Nicolò Pacassi, who served Empress Maria Theresa at Schönbrunn Palace from 1745. The elegant façade, surmounted by a balustrade featuring statues of the Olympian gods by Giovanni Battista Mazzoleni from Bergamo, is considered particularly similar to his style. Also from the 18th century are the decorative apparatus preserved on the piano nobile, with stucco ceilings and, in the hall of honor, the large painting of The Gods of Olympus (1745), the work of Antonio Paroli. The frescoes discovered during recent restoration work, attributed to Francesco Chiarottini from Cividale and depicting architectural capricci, date back to a few decades later.

Given to the Province in the 1830s, the palace became the seat of the Provincial Museum in 1900, initially housing the antiquarian and natural history collections and then, from 1938, the "Museum of War and Redemption," which moved to Borgo Castello in the 1980s. Today, it houses the prestigious art gallery, which includes works by some of the great masters of 18th-century Veneto (Marco Ricci, Giambettino Cignaroli, Francesco Pavona) and a large series of 19th-century portraits, among which the works of Giuseppe Tominz (1790-1866) stand out. The 20th-century collection is also noteworthy, with works by the leading exponents of Julian art from the first half of the century, including Italico Brass, Vittorio Bolaffio, Arturo Nathan, Carlo Sbisà, Giannino Marchig, Gino de Finetti, Luigi Spazzapan, and Tullio Crali. Also noteworthy is the collection of paintings and graphics by Anton Zoran Music.