ANKARA, TURKEY—A 1,500-year-old basilica has been discovered in western Turkey’s Lake Iznik. Mustafa Şahin of Bursa Uludağ University says that the ancient building can be seen from the shore. Excavations should help scholars determine who used the building. It may have been known as St. Peter’s Church, which is mentioned in early Christian writings. “We will share the findings with the public as soon as we get detailed information,” Şahin said.