St Helen's (Cornish: Enys Elyd or Enys Elidius) is one of the fifty or so uninhabited islands in the archipelago of the Isles of Scilly and has an approximate area of 0.1885 square kilometres (46.6 acres). On the south side of the island is one of the earliest Christian sites in Scilly, an early medieval religious complex, which is thought to be the remains of St Elidius Hermitage, an 8th-century chapel lived in by Saint Lide, (also known as Elid or Elidius). There are also the remains of an isolation hospital used to quarantine sailors with plague. The island is the major part of a Site of Special Scientific Interest and some features have been given the designation of scheduled ancient monument. Access to the island is through chartered or private boat, although there are some season tri