Santi Quattro Coronati
• The second region included the Caelian Hill, a section of the Palatine Hill, and stretched southward to the foot of the Aventine Hill. It incorporated the areas around Santi Quattro Coronati, the Aqua Claudia (between the Caelian and Palatine hills), the Circus Maximus, the Septizodium and the Porta Metronia. Both of these regions were merged during the twelfth century to form "Ripe et Marmorate".