Chapelle Saint-Tugen, Gothic chapel in Primelin, France

Chapelle Saint-Tugen is a granite chapel of the 16th and 17th centuries, 29 metres long and 28 wide, with a lower gabled nave and a square tower topped by a battlemented parapet and a small domed lantern. Inside, a pointed wooden barrel-vaulted ceiling with dark timber ribs covers a space with faded red and ochre murals and tall pointed stone arches.

A chapel of Saint Tujan is first mentioned in 1118, when Saint-Tugen was a trève of Primelin with four manors and fifteen villages under it. Construction began under René du Menez and Marie du Faou and ran from 1535 to 1773: the tower was raised in 1579-1581, Alain du Menez added the north chapel and double arcade in 1611, the sacristy followed in 1720-1721, and the transept was reworked between 1749 and 1773. The trève was suppressed in 1785.

Saint Tugen, a 5th-century abbot of Daoulas, was invoked against rabies; lead keys blessed here were sold at the pardon held on the third Sunday of June, when thousands came from Cornouaille, Trégor and Vannetais. Residents of Primelin were called paotred en c'halouez, "the key boys", and wore a small embroidered cross in his memory.

The chapel is typically open to visitors during summer months, managed by a local heritage preservation group. Check ahead for current opening times, as access may vary depending on the season and local events.

At the pardon on the third Sunday of June, small lead keys were blessed and sold as protection against rabies; locals of Primelin were called paotred en c'halouez, "the key boys", and wore a small embroidered cross in memory of Saint Tugen.