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Basilica di San Francesco: Detail from Legend of Saint Francis 17: Francis Preaching Before Honorius III

Detail from Legend of Saint Francis 17: Francis Preaching Before Honorius III

Detail from the Legend of Saint Francis 17: Francis Preaching before Honorius III. One of 28 frescoes in a series by Giotto in the Upper Church (1297-99).

Credit: Web Gallery of Art / www.wga.hu