Columbia subject headings:
Palaces--Saudi Arabia--History.
Qaṣr al-Aḥmar (Riyadh, Saudi Arabia)
Riyadh (Saudi Arabia)--History.
Harvard subject headings:
Architecture--Saudi Arabia--Riyadh.
Palaces--Saudi Arabia--Riyadh--Pictorial works.
Qaṣr al-Murabbaʻ (Riyadh, Saudi Arabia)--Pictorial works.
Riyadh (Saudi Arabia)--Buildings, structures, etc.
Princeton subject headings: