Sultan Ahmed Mosque or Blue Mosque, Istanbul
Seen from the Ayasofya (Hagia Sophia). The design of the Sultan Ahmed Mosque (completed in 1616) is the culmination of two centuries of both Ottoman mosque and Byzantine church development. It incorporates some Byzantine elements of the neighboring Hagia Sophia with traditional Islamic architecture and is considered to be the last great mosque of the classical period. The architect, Sedefkar Mehmed Agha, has ably synthesized the ideas of his master Sinan, aiming for overwhelming size, majesty and splendour.