 The interior houses the panels of "Madonna with Child" (by Matteo Traini, 14th century) and of "St. Nicholas Saving Pisa from the Plague" (15th century), canvases by Giovanni Stefano Marucelli and Giovanni Biliverti, a "Crucifix" by Giovanni Pisano, a "Madonna with Child" by Nino Pisano and an "Annunciation" by Francesco di Valdambrino.A covered passage connects the church to the Torre De Cantone and, from it, to the Palazzo delle Vedove