This famous basilica was constructed in the 6th century A.D.. It is often described as the greatest work of Byzantine architecture. Once the Church of Holy Wisdom, Christendom’s crowning glory, it glittered with mosaics and artistic treasures. Today, the Hagia Sophia is the fourth largest building constructed as a church in the world. It was dedicated to Hagia Sophia which means Divine Wisdom – an attribute of Christ.