Interior of Hagia Sophia Mosque, Sultanahmet, UNESCO World Heritage Site, Fatih District, Istanbul Province, Turkey, Europe

hagia sophia mosque istanbul turkey unesco world heritage architecture dome ceiling mosaic historical site cultural landmark fatih district religious building visitor attraction byzantine architecture islamic art tourist destination turkish history stained glass ancient structure monumental art tourism spirituality preservation historical significance architectural marvel cultural heritage pilgrimage iconic landmark holy site architectural beauty design structural engineering ornamentation restoration exterior architecture historical mosaics vibrant colors spiritual experience east europe architectural tourism interior design interior hagia sophia