No other country in the Middle East or North Africa has as great a proportion of Christians.
Migration brings an ancient Eastern Christian community to an ancient church.
1,500 years of history are just waiting to be discovered underfoot.
Turkey is gearing up to convert museum, once the cathedral of the Church of Constantinople, into a mosque.
Patriarch Sahak II says it would be better to see visitors prostrating themselves "with respect and awe" rather than running around taking pictures.