The Capitoline Hill is one of Rome’s famous seven hills, and in Italian it’s called the Campidoglio. The Piazza del Campidoglio is the trapezoidal space atop the hill, with buildings on three sides and a grand staircase on the fourth. The piazza and surrounding buildings were designed by Michelangelo in the mid-1500s.
Michelangelo employed several visual tricks to give the space a balanced feel, despite its lack of literal symmetry. He designed facades for the existing buildings, made the staircase more of a gradual ramp, and crafted a pattern to be inlaid in the piazza that deceives the eye into thinking it’s a perfect oval (it’s actually egg-shaped). The buildings once served as government buildings, but they now house the Capitoline Museums.
At the center of the Piazza del Campidoglio is a replica of an Ancient Roman bronze statue of Marcus Aurelius on horseback. The original bronze is nearby in the Capitoline Museums.