"The most imposing Italian palace of the 16th century", according to Sir Banister Fletcher, this
palazzo was designed by
Antonio da Sangallo the Younger, one of
Bramante's assistants in the design of
St. Peter's and an important Renaissance architect in his own right. Construction began in 1515 after one or two years of preparation, and was commissioned by
Alessandro Farnese, who had been appointed as a
cardinal in 1493 at age 25 and was living a princely lifestyle. Work was interrupted by the
Sack of Rome in 1527. When, in January 1534 Alessandro became Pope
Paul III, the size of the palace was increased significantly and he employed
Michelangelo who completed the redesigned third story with its deep cornice and revised the courtyard as well. The post-1534 developments were not only a reflection of Alessandro's change in status but employed architecture to express the power of the Farnese family, much as at their
Villa Farnese at Caprarola. The massive palace block and its facade dominate the
Piazza Farnese. Architectural features of the main facade include the alternating triangular and segmental pediments that cap the windows of the
piano nobile, the central rusticated portal and Michelangelo's projecting
cornice which throws a deep shadow on the top of the facade. Michelangelo revised the central window in 1541, adding an architrave to give a central focus to the facade, above which is the largest papal
stemma, or coat-of-arms with papal tiara, Rome had ever seen. When Paul appeared on the balcony, the entire facade became a setting for his person. The courtyard, initially open arcades, is ringed by an academic exercise in ascending orders (
Doric,
Ionic and
Corinthian). The
piano nobile entablature was given a frieze with garlands, added by Michelangelo. On the garden side of the palace, which faced the
River Tiber, Michelangelo proposed the innovatory design of a bridge which, if completed, would have linked the palace with the gardens of the Vigna Farnese, Alessandro's holding on the opposite bank, that later became incorporated into the adjacent villa belonging to the
Chigi family, which the Farnese purchased in 1584 and renamed the
Villa Farnesina. While the practicalities of achieving this bridge remain dubious, the idea was a bold and expansive one. During the 16th century, two large granite basins from the
Baths of Caracalla were adapted as fountains in the Piazza Farnese, the "urban" face of the palace. The palazzo was further modified for the
papal nephew Ranuccio Farnese by
Jacopo Barozzi da Vignola. It was completed for the second Cardinal Alessandro Farnese by
Giacomo della Porta's porticoed facade towards the
Tiber which was finished in 1589. Following the death of Cardinal
Odoardo Farnese in 1626, the palazzo stood virtually uninhabited for twenty years. At the conclusion of the
War of Castro with the papacy,
Duke Odoardo was able to regain his family properties, which had been sequestered. The resulting inventory is the oldest surviving complete inventory of Palazzo Farnese. After Odoardo's death,
Pope Alexander VII allowed Queen
Christina of Sweden to lodge in the palace for several months, but she "proved a tenant from hell". After her departure for Paris, the papal authorities discovered that her unruly servants not only had stolen the silver, tapestries, and paintings, but also had "smashed up doors for firewood" and removed sections of copper roofing. ==Interior decorations==