important early churches of Rome. A cemetery in use from the 8th century until shortly before the construction of the Palazzo was also identified. The facade, with its rhythm of flat doubled pilasters between the arch-headed windows, is Florentine in conception, comparable to Leone Battista Alberti's Palazzo Rucellai. The overall pattern of drafted masonry, cut with smooth surfaces and grooves around the edges, is ancient Roman in origin. The grand portal was added in the 16th century by Domenico Fontana on the orders of Cardinal Alessandro Farnese. The bone-colored travertine of the Palazzo was spolia from the nearby ancient ruins of the Theatre of Pompey, for Rome was a field of ruins, built for a city of over one million that then housed a mere 30,000. The 44 Egyptian granite columns of the inner courtyard are from the porticoes of the theatre's upper covered seating, however they were originally taken from the theatre to build the old Basilica di San Lorenzo in Damaso. It is more probable that the form of the courtyard is derived from that of the Palazzo Ducale in Urbino, because the individuals involved in the early planning of the Palazzo had come from Urbino. In the Palazzo is a vast mural that Giorgio Vasari completed in a mere 100 days, therefore named the Sala dei Cento Giorni. He boasted of this accomplishment to Michelangelo, who responded "Si vede" ("It shows"). In the Palazzo a little, private theatre was installed by Cardinal Pietro Ottoboni, and in the later 17th century the Palazzo became a center of musical performance in Rome. At the time when Cardinal Pietro Ottoboni lived there as vice-chancellor, the Palazzo della Cancelleria became an important center of the musical life of Rome. Between 1694 and 1705 several oratories by Alessandro Scarlatti and various cantatas for Christmas were performed here for the first time. In 1709 Ottoboni also had a theater built on a project by the architect Filippo Juvarra, which was removed after his death (February 28, 1740). It was in this theater that at least one gathering of the Accademia degli Arcadi was held on the occasion of Christmas 1712 to celebrate the child Jesus. See also Cancelleria Reliefs References External links Palazzo della Cancelleria Apostolica The Vatican: spirit and art of Christian Rome, a book from The Metropolitan Museum of Art Libraries (fully available online as PDF), which contains material on the