Agios Efstratios

Agios Efstratios or Saint Eustratius, colloquially Ai Stratis, anciently Halonnesus or Halonnesos, is a small Greek island in the northern Aegean Sea about 30 kilometres southwest of Lemnos and 80 kilometres northwest of Lesbos. The municipality has an area of 43.325 km². Together with Lemnos and nearby islets it forms the regional unit of Lemnos, part of the Greek archipelagic region of the North Aegean. ()