The church of Hagia Sophia (Greek: Holy Wisdom) was built under the
direction of Justinian I in Constantinople and designed by the architects Anthemius of
Tralles and Isidore of Miletus.
The vast structure was erected within six years (AD 531 - 537). The domed basilica was the largest enclosed space of its time and became later a model for many Islamic mosques throughout the Arab world.