Alongside the various important religious structures, there are many other interesting sites to visit in Hatay: the Charonion, dated to 175-164 BC, is a gigantic bust of Charon (the mythological ferryman who carried the souls of deceased to the other world), carved to the cliff face near the Cave Church of Saint Peter; built in Antiquity, the Citadel of Antioch has one of the longest ramparts in Turkey; the Titus- Vespasian Tunnel from the 1st century AD; and, Trajan's Aqueduct from the 2nd century AD.