The Annunciation Cathedral is a Greek Orthodox Cathedral located in Atlanta, Georgia. It is the seat of the Archbishop of the Metropolis of Atlanta, in the Southeastern United States. The church is known for the rich background and extravagant decoration on both the interior and exterior of the church. The original membership of the parish was 72…The Annunciation Cathedral is a Greek Orthodox Cathedral located in Atlanta, Georgia. It is the seat of the Archbishop of the Metropolis of Atlanta, in the Southeastern United States. The church is known for the rich background and extravagant decoration on both the interior and exterior of the church. The original membership of the parish was 72. The current membership includes over 1200 families.