Fortezza Medicea

The Medici Fortress rises on Arezzo's Colle di San Donato, a hill fortified since antiquity. Its five-bastion plan, completed in 1540, reflects the military architecture Florence used to secure its control of the city.

Why it matters

The fortress occupies a hill that served as Arezzo's acropolis before the Roman period. After Florence's conquest, the Medici rebuilt the site as a stronghold designed for artillery and control of the city. It remains a striking example of sixteenth-century military architecture and a prominent part of Arezzo's landscape.

What to notice

The star-shaped plan has five bastions, attributed to Antonio da Sangallo the Younger. The La Spina bastion differs from the more regular forms used elsewhere in the complex. Within the enclosure, remains of the medieval church of San Donato in Cremona and the older Porta Sant'Angelo recall earlier phases of the hill's defences. The fortress also provides a broad view across Arezzo.

Context and history

The hill had an early fortified nucleus between the ninth and eleventh centuries, followed by the fourteenth-century cassero of Bishop Guido Tarlati. Giuliano and Antonio da Sangallo were commissioned to design the Medici fortress; work was completed in 1540 under Cosimo I. Its garrison was disbanded in the late eighteenth century. In 1816, the statesman Vittorio Fossombroni purchased the complex and later left it to the city, which developed it as a public space.