This Byzantine church remains are the traditional location of the synagogue that Paul preached in.
Sources:
- Acts 13:14-52
- Robert L. Mowery, "Paul and Caristanius at Pisidian Antioch" in Biblica 87,22 (2006), pp. 223-242
- http://www.padfield.com/acrobat/history/pisidian-antioch.pdf