Columbia subject headings:
Madrid (Spain)--Buildings, structures, etc.
Museo del Prado--Buildings.
Museum buildings--Spain--Madrid.
Harvard subject headings:
Architecture--Early works to 1800
Art museum architecture--Spain--Madrid.
Madrid (Spain)--Buildings, structures, etc.
Museo del Prado
Princeton subject headings:
Architecture--Early works to 1800.
Art museum architecture--Spain--Madrid.
Madrid (Spain)--Buildings, structures, etc.
Museo del Prado.