A former Eastern Orthodox Church near the Topkapi Palace in Istanbul, The Hagia Eirene was originally built in the 4th Century under the reign of Constantine. In May and June 381, the first council of Constantinople took place here. That original building was burned down during the Nike Revolts in 532. It was restored by Emperor Justinian I in 584. It served as the patriarchate until the Haghia Sophia was completed in 537. The building was badly damaged during an earthquake in the 8th century, and what you see today is the result of repairs made since that time.