Oldest Christian House of Prayer on Earth?

The afternoon of our second day on the Turkish coast, fighting jetlag with the energy only raw excitement can produce, Ben, Liz and I descended an old road which cut through tangerine orchards like an ancient dry waterway. Immediately to our right loomed a small, unattended Byzantine chapel dating back to maybe the 2nd century.

The apostle John would have been dead 100 years, Polycarp his disciple maybe 50 or so years. The chapel was poorly maintained. It was moving to stand on its tiled floor depicting dolphins, which were popular at that time and appeared on the earliest Byzantine coins. The faith of the early Christian movement would have been raw and real to whoever knelt there 1800 years ago. See the mosaic below.