The hermitage of Saint Benedict belongs to the group of caves which can be accessed from the garden behind the San Cosimato Monastery and were built in the sixth century by a group of Benedictine monks. The caves are overlooking the River Aniene and are reached down a seventeenth century covered staircase. The caves are adorned with seventeenth-century frescoes. In his cave St. Benedict remained for three years. In the Convent of San Cosimato took place the attempted poisoning of St. Benedict by monks unhappy with his rule.