Gubbio reached its apogee in the first half of the 16th century, with metallic lustre glazes imitating gold and copper. Gubbio became part of the Papal States in 1631, when the della Rovere family, to whom the Duchy of Urbino had been granted, was extinguished. In 1860 Gubbio was incorporated into the Kingdom of Italy along with the rest of the Papal States. The name of the Pamphili family, a great papal family, originated in Gubbio then went to Rome under the pontificate of Pope Innocent VIII (1484–1492), and is immortalized by Diego Velázquez and his portrait of Pope Innocent X. Geography Overview The town is located in northern Umbria, near the border with Marche. The municipality borders Cagli (PU), Cantiano (PU), Costacciaro, Fossato di Vico, Gualdo Tadino, Perugia, Pietralunga, Scheggia e Pascelupo, Sigillo, Umbertide and Valfabbrica. Frazioni The frazioni (territorial subdivisions) of the comune of Gubbio are the villages of: Belvedere, Bevelle, Biscina, Branca, Burano, Camporeggiano, Carbonesca, Casamorcia-Raggio, Cipolleto, Colonnata, Colpalombo, Ferratelle, Loreto, Magrano, Mocaiana, Monteleto, Monteluiano, Nogna, Padule, Petroia, Ponte d'Assi, Raggio, San Benedetto Vecchio, San Marco, San Martino in Colle, Santa Cristina, Scritto, Semonte, Spada, Torre Calzolari and Villa Magna. Monuments and sites of interest The historical centre of Gubbio has a decidedly medieval aspect: the town is austere in appearance because of the dark grey stone, narrow streets, and Gothic architecture. Many houses in central Gubbio date to the 14th and 15th centuries, and were originally the dwellings of wealthy merchants. They often have a second door fronting on the street, usually just a few inches from the main entrance. This secondary entrance is narrower, and a foot or so above the actual street level. This type of door is called a porta dei morti (door of the dead) because it was proposed that they were used to remove the bodies of any who might have died inside the house. This is almost certainly false, but there is no agreement as to the purpose of the secondary doors. A more likely theory is that the door was used by the owners to protect themselves when opening to unknown persons, leaving them in a dominating position. Religious architecture or sites Duomo: This Cathedral was built in the late 12th century. The most striking feature is the rose-window in the façade with, at its sides, the symbols of the Evangelists: the eagle for John the Evangelist, the lion