Columbia subject headings:
Architecture, Romanesque--Spain--Castile.
Catholic church buildings--Spain--Castile.
Porticoes--Spain--Castile.
Harvard subject headings:
Architecture, Romanesque--Spain--Castilla y León.
Christian art and symbolism--Spain--Castilla y León--Medieval, 500-1500.
Church decoration and ornament--Spain--Castilla y León--History--To 1500.
Church doorways--Spain--Castilla y León--History--To 1500.
Decoration and ornament, Romanesque--Spain--Castilla y León.
Stone doorways--Spain--Castilla y León--History--To 1500.
Princeton subject headings:
Architecture, Romanesque--Spain--Castile.
Catholic church buildings--Spain--Castile.
Porticoes--Spain--Castile.