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.
Basílica de Santa María de los Reales Alcázares Basílica y Real Colegiata de Santa María la Mayor de los Reales Alcázares de Úbeda is a Spanish national monument. The Bien de Interés Cultural landmark, is the main church in Úbeda, Jaén, located in the Vázquez de Molina Square, opposite the Vázquez de Molina Palace. The basilica forms part of the UNESCO World Heritage Site which was declared a monument in 2003.