March 17 is the feast of St. Patrick, the apostle of Ireland. A Romano-British youth carried off by Irish raiders in the early fifth century, he escaped slavery after six years, returned as a bishop, and spent the rest of his life converting the island. His Confessio — a short autobiography written in defence of his mission — is the oldest surviving text by a British author, and the only one that gives us a saint's voice in his own words.
Patrick's grave is at Downpatrick, in Northern Ireland, where the cathedral and a great granite boulder marked with a cross mark the traditional site. The mountain he is said to have climbed in fasting — Croagh Patrick, the "Reek," in County Mayo — has been climbed by pilgrims since at least the medieval period, penitents climbing barefoot up the scree to the small chapel at the summit. The last Sunday of July, "Reek Sunday," draws tens of thousands of climbers every year.
From Knock, where the apparition of 1879 showed St. Patrick alongside Mary and Joseph, to the Irish diaspora cathedrals of New York and Philadelphia, the feast is celebrated more widely outside Ireland than inside it. The shamrock he is said to have used to explain the Trinity is worn on every continent on March 17.
Connected Destinations

Croagh Patrick
Ireland · Europe
Croagh Patrick is Ireland's holy mountain where St. Patrick fasted for 40 days and continues as the nation's most important Catholic pilgrimage destination.

Downpatrick
Northern Ireland (UK) · Europe
Downpatrick is revered as the burial place of Ireland's patron saint St Patrick, making it a significant Catholic pilgrimage destination in Northern Ireland.

Knock
Ireland · Europe
Knock Shrine is Ireland's International Eucharistic and Marian Shrine where an apparition of the Blessed Virgin Mary, St. Joseph and St. John appeared in 1879.