Carceri Means Enclosure
Carceri does not mean prison. It means enclosure: a place of withdrawal. Francis and his earliest brothers used the natural caves on this slope of Mount Subasio for solitary prayer, returning to the Porziuncola or San Damiano between retreats. A small oratory was built at the place; the present 14th-century church was raised around it, and Saint Bernardino of Siena enlarged the cells and the cloister in the 15th century without breaking the modest scale of the original. The Capuchin Franciscans have kept the hermitage in continuous custody since then.
The buildings are stacked into the hillside above a dry ravine, the Fosso delle Carceri, spanned by a short stone bridge at the entrance. The 14th-century church encloses the original oratory of Saint Mary. A narrow stair descends from the church into the grotto traditionally identified as the place where Francis slept. The Capuchin cells are arranged along the slope, none of them larger than they need to be. Beyond the buildings the hermitage gives way to the Bosco Sacro, the protected oak wood that has shielded the site for eight centuries.
The Carceri is the quietest place in the Assisi geography. The Capuchins keep it as a hermitage rather than as a museum, and the woods around it absorb the visitor traffic that crowds the basilicas below. Silence is asked for inside the buildings and along the paths above them. The site is best entered slowly and left slowly.