The church, built between 1511 and 1548 and formerly dedicated to Notre-Dame, replaced the chapel of the former fortified castle of Lannion. Although it originally comprised just a nave and two narrow aisles, from 1580-90 it was adorned with chapels built by brotherhoods.
Renovation work in the 19th century revealed an intact vault with an inverted hull, dating from the 16th century. It features symbols relating to the maritime domain, as well as painted ermine tails, the symbol of...