SUBMERGED CHURCH. Off the shores of modern Iznik (ancient Nicea), a late-fourth- or early-fifth-century basilica lies submerged 6–10 feet underwater. Divided into three aisles with an apse on its eastern end, the basilica served as a Christian church. It was likely built overtop an earlier church, which may be the location where the Council of Nicea first met in 325 C.E.