Stroggyli Kastellorizou (Greek: Στρογγυλή Μεγίστης), also called Strongili or Ipsili, is a Greek islet which lies in the eastern Mediterranean Sea, about five nautical miles south-east of the island of Kastelorizo. The island is about 1.5 km long, and up to 700 m wide. It covers an area of about 0.9 km². It is rather flat and covered with macchia. Stroggyli is the easternmost Greek Territory. Administratively it is part of the Municipality of Megisti. The 2001 Greek census showed a population of nine inhabitants. It has a lighthouse, which has the characteristic of being the easternmost building in Greece. The Turkish name for the island is Çam Adası.