Columbia subject headings:
Architecture, Renaissance--Spain.
Stairs--Spain--Burgos (Province)--History--16th century.
Stairs--Spain--León (Province)--History--16th century.
Harvard subject headings:
Princeton subject headings:
Architecture, Renaissance--Spain.
Stairs--Spain--Burgos (Province)--History--16th century.
Stairs--Spain--León (Province--History--16th century.