The medieval chapel of St. Trinian's lies at the foot of Mount Greeba, shrouded in mystery and legends. Local myths tell of a terrifying Buggane (creature of Manx folklore) that lived in the mountains above the church, furious at the sound of the bells ringing, he thundered down from the mountains, tearing the roof from the building. It is said the roof was replaced three times, each being torn down.
The roofless chapel dates back from the 14th century, and it is thought that this was to replace an earlier 12th century chapel in the same location. It was in ruins by the 17th century.