Sign at Inishowen Head, Co. Donegal, Republic of Ireland.

Saint Columba (Irish- Colm Cille) is one of the three chief saints of Ireland and patron saint of the city of Derry. Ordained a priest around 546, he taught and preached throughout Ireland, founding a number of monasteries.

In 563 he went into exile as a penance and sailed from Donegal to found the famous monastery on the Scottish island of Iona. His final landfall in Ireland was near here in Port Cille, where he climbed the hill to get a last look at his beloved Derry before setting sail.

An annual pilgrimage is made to this spot every year on 15th August.