Palazzo Donati, Medieval tower and architectural complex in central Florence, Italy.

Palazzo Donati is a medieval private tower in central Florence built from stone and featuring original architectural details from its period. The structure stands out for its height and traditional construction methods that were typical of wealthy residential buildings from the Middle Ages.

The two towers belonged to the Donati family; the one at Borgo Albizi 11 passed to the Albizi in the early 15th century, who built the palace, then to the Tassinari in the 18th century and the Casuccini. The tower was raised between 1931 and 1932 by engineer Luigi Squarcialupi for the Piazzesi family. The tower at Via Palmieri 35 was the site of Corso Donati's last resistance in 1308.

The first tower was wrongly called Torre di Gemma, after Gemma Donati, Dante's wife; it never belonged to her. The second tower, at Via Palmieri 35r, was where Corso Donati made his last stand in 1308 against the Signoria's troops, who suspected him of wanting to become lord of Florence with Uguccione della Faggiola's help. A 1639 notice by the Capitani di Parte on the low building by the piazza forbids vegetable sellers from trading there.

The two towers stand in the same block and are seen from Piazza San Pier Maggiore: the first at Borgo Albizi 11, the second at Via Matteo Palmieri 35r, linked through the Palazzo Corbizi. Part of Palazzo Donati now houses a hotel, and the building is under architectural protection. The second tower's first-floor portal was reached by a ladder drawn up at night during the 13th- and 14th-century factional struggles.

The two towers are linked through the Palazzo Corbizi behind them, forming a fortified enclave of the Donati family; the compact street front and inner courtyards show how the clan controlled the block. In 1308 the tower on Via Palmieri was the scene of Corso Donati's last stand against the Signoria's troops.