Input (grade 13): The present chapel, on the site of the Cappella Maggiore, was designed by Baccio Pontelli for Pope Sixtus IV, for whom it is named, and built under the supervision of Giovannino de Dolci between 1473 and 1481.
Output (grade 6): The Chapel was built between 1473 and 1481 by Giovanni dei Dolci for Pope Sixtus IV.