The massive dome measures 305 feet (93 meters) in diameter, or about the size of a football field and stands 263 feet (80 ...

Turkey is set to begin restoration and reinforcement work on the dome of the Hagia Sophia, in one of the biggest repair projects carried out on the 1,486-year-old structure, experts said on Monday.

Hagia Sophia was the largest cathedral in the world for 900 years until its capture ... she told Reuters outside the Hagia Sophia. The dome will first be covered to protect it during the repair ...