From the church of San Domenico it's a five-minute walk northwest to the Badia Fiesolana, which was Fiesole's original cathedral. Dating to the 11th century, it was first the home of the Camaldolese monks. Thanks to Cosimo il Vecchio, the complex was substantially restructured. The facade, never completed owing to Cosimo's death, contains elements of its original Romanesque decoration. The attached convent once housed Cosimo's valued manuscripts. Its mid-15th-century cloister is well worth a look.