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        The Great Mosque 
          of Cordoba: probably the most exquisite mosque of western Islamic 
          land, founded by 'Abd al-Rahman I in 786, enlarged several times, 832-48 
          under Abd al-Rahman II, 962 under al-Hakam II, and 987 by al-Mansur, 
          the vizir of Hisham II (this time it was extended to the west). The 
          Mosque has an intricate hypostyle arrangement with double-tiered, arched 
          supports, ribbed domes above the maqsura, 
          and a unique mihrab-chamber with mosaic 
          decoration.  
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