Collegiate Church of Saint Martin The collegiate church belonged until 1791 to a community of canons of Tours. Around 1180-1200, the building was rebuilt in primitive Gothic style, modelled on the cathedral of Sens. On the stone tympanum of the Romanesque door are carved a flowered cross, a dove, a snake and a lamb. Horseshoes are nailed to the door by faithful invoking the protection of Martin as patron saint of horses.