Columbia subject headings:
Harvard subject headings:
Architecture, Renaissance--Spain--San Lorenzo del Escorial.
Escorial--Congresses.
Monasteries--Spain
San Lorenzo del Escorial (Spain)--Buildings, structures, etc.
Princeton subject headings:
Escorial--History.
Herrera, Juan de, approximately 1530-1597.
San Lorenzo del Escorial (Spain)--Buildings, structures, etc.