Located beside the remains of the Roman fort of Babylon, the Coptic Museum offers a unique collection of art and artifacts from the history of Coptic Egypt and an exhibit about the history of Christianity in Egypt.
The Coptic Orthodox is a separate church from the Orthodox Churches of Greece and Turkey and the Catholic Church in Rome, having split from the main stream of Christianity early in its history of a theological disagreement about the nature of Christ and the Holy Spirit.
Coptic Christianity became was the dominant religion in Egypt under Roman rule before the arrival of Islam in the 7th century. The unique history of Christianity in Egypt is fascinating and fiercely defended by the Coptic Church to this day.
The museum houses the largest collection of Coptic artwork and cultural artifacts in the world, cataloguing a period of great change in the history of Egypt and the world at large. The history of Coptic Christianity records the interaction of several different cultures and religions, including the ancient gods of Egypt, the pagan faiths of Rome and Greece, early Christianity, and Islam.
You can see here that it is no coincidence that the ancient Egyptian ankh and the cross of Christianity are so similar in their fundamental form.