bibi khanum, samarkand, 1995

15th 1990s 1995 arch architecture art basilica bibi bibi-khanum blue building cathedral ceiling century circle commemoration communism complex constructed design dome facade favourite great iran islamic khanum kufi landmark largest lighting magnificent mosque mosques neglect one pattern period persia precedes quran rare restoration russia samarkand soviet symmetry tamerlane time timur tower turkic uzbekistan wife work world