The Église Saint-Martin is the parish church of the upper town, a building unusual enough to be worth seeking out for its facade alone: alternating bands of dark flint and pale Caen sandstone give it a chequerboard pattern that catches the light differently from every angle. The church was rebuilt in the fifteenth and sixteenth centuries on the site of an earlier sanctuary destroyed during the Hundred Years' War.
Inside, the interior is calmer than the exterior suggests, with whitewashed vaults, a handful of carved wooden statues, and a modest collection of ex-votos from local sailors. Look out for the model ships hanging from the ceiling — a tradition along the Picardy and Normandy coasts, hung by the families of fishermen as thanks for safe returns.