Palazzo del Circolo dell'Unione

In 1559, the property, now one palace, was bought for 720 florins by the banker and merchant Simone di Jacopo Corsi, who commissioned a design to which Giorgio Vasari, Giambologna, and Ammannati contributed.

The building was passed on to two brothers, Marquis of the Barbolani family of Montauto, married to Uguccioni women.

In the 16th century, the palace was known for it facade fresco decoration by Domenico di Francesco Schiena and Giovanni Fiammingo.

At the end of the 18th century, the salons overlooking the street were decorated by Tommaso Gherardini, Fortini Agostino, Luigi Lorenzi, Pietro della Nave, Giuseppe Nobili and Domenico Fabbroni, but these murals were moved to other properties.

Further interior refurbishments, in an exotic, likely oriental, style, in the Club space occurred in the late 19th century under the guidance of prince Ferdinando Strozzi.