Sanctuary of San Vito lo Capo, Religious fortress in San Vito Lo Capo, Italy

The Sanctuary of San Vito lo Capo is a building combining religious and military architecture located in Piazza Santuario in the town of the same name. Its walls vary in thickness and feature defensive openings, while a square tower defines the structure's form.

A place of worship dedicated to Saint Vitus existed by 1154, when the Arab traveller Muhammad al-Idrisi recorded it under Norman rule. Documents from Erice's municipal archive attest a church built by Erice's faithful in 1241. Around the 14th century a small chapel dedicated to the martyr stood here; enriched by indulgences granted by Pope Innocent VIII in 1485, it was transformed into a fortress-shelter at the end of the 15th century to protect pilgrims from bandits.

The sanctuary is the seat of an archpriesthood and parish of San Vito; in 1667 the bishop of Mazara, Giuseppe Cigala, raised it to sacramental church to assist pilgrims in danger of death. Its interior is a single wide nave with a large side chapel; the right arm holds the Chapel of the Most Holy Crucifix and the Chapel of Saint Joseph and the Child Jesus.

The sanctuary stands in the historic centre, with its main facade on Via Savoia at the corner of Via Santuario. The entrance portal sits slightly right of centre, topped by a coat of arms, a niche with the martyr's statuette and an oculus framed in stone blocks. Two tall single-light windows flank it, and an open bell cell with small pillars occupies the right corner.

The sanctuary began as a small chapel around the 14th century, but by the late 15th century it was turned into a fortress-shelter to protect pilgrims from thieves and bandits. Its defences include a lance-shaped tower with Ghibelline swallowtail merlons, thick walls, arrow slits and a machicolation.