The Masjid-e-Jameh Yazd is the grand, congregational mosque of Yazd city. The 12th-century mosque is still in use today. It was first built under Ala’oddoleh Garshasb of the Al-e Bouyeh dynasty. The mosque was largely rebuilt between 1324 and 1365, and is one of the outstanding historical buildings of Iran.
The mosque is a fine specimen of the Azari style of Persian architecture. The mosque is crowned by a pair of minarets, the highest in Iran, and the portal’s facade is decorated from top to bottom in dazzling tile work, predominantly blue in colour. Within is a long arcaded courtyard where behind a deep-set south-east iwan is a sanctuary chamber (shabestan). This chamber, under a squat tiled dome, is exquisitely decorated with faience mosaic: its tall faience Mihrab, dated 1365, is one of the finest of its kind in existence.
The elegant patterns of brickwork and the priceless inscription of mosaic tiles bearing angular Kufic all create a sense of beauty. The main prayer niche, the one which is located below the dome, is decorated with elegant mosaic tiles.
On the two star-shaped inlaid tiles, the name of the builder and the time of construction of the prayer niche sparkle beautifully. The two towering minarets dating back to the Safavid era measure 52 meters in height and 6 meters in diameter. http://yazd.today/yazd-masjid-e-jameh-the-12th-century-mosque-one-of-the-most-interesting-historical-monuments/