Constructed in the 15th century on the orders of Girolamo Riario, nephew of Pope Sixtus IV, the palace incorporates a series of pre-existing buildings from the Medieval period. Traces of these buildings are still visible in the corner room on the ground floor, in the form of the foundations of a tower dating from the 12th century. The frescoes in the room where the Ludovisi Ares is displayed date from the late 15th century. The room still retains large sections of a trompe-l\u2019oeil painted colonnade, with tapestries and a sideboard showing the silver plates and other gifts celebrating the wedding of Girolamo Riario and Caterina Sforza. In 1511, the palazzo became the property of the Cardinal [Office1] of Volterra Francesco Soderini, who entrusted extension works first to Antonio da Sangallo the Elder and then to Baldassarre Peruzzi. These men were responsible for the initial development of the courtyard around which the building is constructed. The palace then became a diplomatic residence in 1523 before being acquired in 1568 by the Austrian Cardinal Marco Sittico Altemps, nephew of Pope Pius IV. It was in this phase that the construction of the complex was substantially accomplished, and it was extended thanks to the contribution of various architects including Martino Longhi the Elder and his son Onorio. Various painting series were also completed. The most characteristic elements representing the Altemps period include the panoramic belvedere (altana), the frescoed loggia, the frescos still visible in the rooms on the main floor, the grand hall with its monumental fireplace, the Church of San Aniceto with its sacristy, and the Chapel of San Carlo Borromeo.<\/p>\n","protected":false},"excerpt":{"rendered":"
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