The Capitoline Hill is one of the seven hills of Rome. It used to be the site of a temple for the Capitoline Triad. During the 16th century Michelangelo designed a new square, for the planned visit of Charles V, wich became the Piazza del Campidoglio. The new square featured a redesign of the Palazzo Senatorio and a new building, the Palazzo Nuovo. Construction started in 1546 and was completed in 1564.