The Piazza Santa Maria in Trastevere is one of the most charming in Rome. The Basilica is flanked by two religious buildings framing part of the Piazza: to the left, adjacent to the church stands the Saint Callisto Palace, once a Benedictine monastery. To the right of the Basilica stands "La Casa dei Canonici" (Clerical Residence), the façade of which dates back to the Sixteenth Century and was restored in the Eighteen and Nineteen Hundreds. On the same side, stands Palazzo Cavalieri (or Leopardi) with ashlar-work wall designs and a classic baroque portal.