The entire complex features the Tudor Revival style 39-room Mayslake Hall, its retreat wing, and the Portiuncula Chapel, a replica of the Chapel of St. Francis in Assisi, Italy.
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After Peabody's death, the Portiuncula Chapel, a replica of the Chapel of St. Francis of Assisi in Assisi, Italy, was added to the property in memory of him.
Last of this serie is the Porziuncola chapel (1616–20) in Sacro Monte of Orta.
: For the river in California that was once called the Porciuncula River, see Los Angeles River, and for the Italian church for which it was named, see Porziuncola.