In what year was the cathedral, that Arnao de Vergara produced several windows for, registered as a World Heritage Site?
Seville Cathedral The Cathedral of Saint Mary of the See (Spanish: "Catedral de Santa María de la Sede" ), better known as Seville Cathedral, is a Roman Catholic cathedral in Seville (Andalusia, Spain). It was registered in 1987 by UNESCO as a World Heritage Site, along with the Alcázar palace complex and the General Archive of the Indies. "See" refers to the episcopal see, i.e., the bishop's ecclesiastical jurisdiction.
Pescara Cathedral Pescara Cathedral (Italian: "Duomo di Pescara" , "Cattedrale di San Cetteo Vescovo e Martire") is a Roman Catholic cathedral in the Via D'Annunzio in the city of Pescara. The cathedral, dedicated to Saint Cetteus, patron saint of Pescara, has been the seat of the Archbishop of Pescara-Penne since the creation of the archdiocese in 1982. The present Romanesque Revival building, originally called the "Tempio della Conciliazione" ("Temple of Conciliation"), was constructed in the 1930s, replacing the medieval church of San Cetteo.