Fort Saint-Nicolas, Military fort in Marseille, France

Fort Saint-Nicolas is a fort overlooking the Old Port of Marseille, built into a sheer pale rock face. Its light beige and tan limestone walls form a long horizontal rampart with a squared corner section on the left and a taller central block topped by a small stone turret. A dark arched tunnel opening sits near the base of the rock, with lower retaining walls, a short parapet, a fence and a road in front.

The fortification was built in the 1660s on the orders of King Louis XIV to maintain control over the city during a period of unrest. It was designed by renowned military engineer Louis Nicolas de Clerville and later recognized as a historical monument.

The fort's name comes from a chapel founded between 1150 and 1218 on this spot, dependent on the abbey of Saint-Victor. In 1322 the seneschal of Provence had a wooden palisade built at the narrowest passage between the Saint-Jean and Saint-Nicolas forts, with a chain closing the port entrance. The chain was taken as a trophy by Alphonse V of Aragon's Catalans after the sack of 1423 and is still displayed in Valencia Cathedral.

The fort stands on the south side of the Old Port entrance, in Marseille's 7th arrondissement, behind the abbey of Saint-Victor; the site is reached from the Vieux-Port quays. Large parts of the grounds have long been closed to visitors, so check current opening conditions before setting out. The walls and the rock face below them are best seen from the port entrance and the neighbouring Fort Saint-Jean side.

The fort's first stone was laid on 11 February 1660 by the Duke of Mercœur, and the block was carved with a Latin inscription warning that Marseille's passion for liberty might lose the city and the kingdom. Clerville used stone from the demolished Porte Royale and neighbouring ramparts, plus pink limestone from La Couronne.