Emperor Constantine built this ancient church. He loved Sofia so much, he wanted to make it the capital of the Byzantine Empire. The church is surrounded today by all these buildings because during the Communist era there was an attempt to hid religious sites from public view, so I am told.
This was once a thriving city. St. Paul wrote a letter to the Christian community. The 4th Gospel is believed to have been written here. It is one of the seven churches mentioned in the Book of Revelation. One of the great councils of the Church was held here.
Ephesus was once a great city. St. Paul wrote a letter to the Christians who live there. The Third Ecumenical Council was held there where the Church affirmed the Nicene Creed and declared Mary as Theotokos. Although the ancient city no longer exists, you can still admire its greatness as you walk through its ruins.