Six years after reopening for worship, Istanbul's 1,489-year-old Ayasofya Grand Mosque remains a living testament to history.
Built as a Byzantine cathedral in 537 AD, transformed into an Ottoman imperial mosque in 1453, and converted to a museum in 1934, the UNESCO World Heritage Site has witnessed the rise and fall of empires.
Today, the "Eighth Wonder of the World" continues to welcome millions of worshippers and visitors from around the globe.
