Where is Patmos located?

Patmos is situated in the Icarian Sea (Aegean) about 34 miles west of Asia Minor, and 37 miles from Miletus, and 60 miles from Ephesus. Because the island has a barren and rocky coastline, and is so isolated, it served as a penal isle(prison). The Apostle John was exiled here by Domitian(81-96 C.E.), a hater of Christianity, for his active preaching about Jesus.(Revelation 1:9)