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.
Cathedral of the Nativity, Suzdal The Cathedral of the Nativity of the Theotokos in Suzdal Russia is a World Heritage Site. It is one of the eight White Monuments of Vladimir and Suzdal. One of the most complex monuments of Russian medieval architecture. It was originally constructed during the reign of Vladimir II Monomakh during the late 11th century.