The town of Rue is about ten kilometers from the coast, somewhat hidden in the interior. In the Middle Ages, when the Bay of the Somme had not yet been bogged down, the town was a port, with an important trade activity. The rich architectural heritage of the town still bears witness to this greatest past and makes a visit more than worth it.
A second important cause of his glory lies in a Byzantine cross with a relic of Christ, that miraculously washed up in the Middle Ages. It would have come directly from Jerusalem. True or not true, but Rue became a famous pilgrimage site. The numerous gifts that the pilgrims brought with them compensated for the loss of trade as a result of the silting up of the port. Isabel of Portugal, the wife of the Duke of Burgundy Philip the Good, belonged to the donors
Among the most interesting sights of the town is the Belfry, symbol of the freedom that was acquired in the 12th century. The Belfort (one of the few that can be found outside Flanders) dates from the 15th century. Despite its low height, the view from the top of the tower extends from the Marquenterre to the Crécy forest.
The Chapelle du Saint-Esprit is a fine example of the Gothique Flamboyant. It was also built in the 15th century. The relic of Christ was kept in the chapel, but was destroyed during the French Revolution. Only a hand survived the fire and can now be seen at the back of the chapel.