The history of Fort Saint-Jean: from military defence to Marseille’s cultural heritage
For centuries, Fort Saint-Jean has occupied a strategic position at the entrance to Marseille’s Old Port. Whilst the site is now dedicated to culture and leisure, its history is intimately linked to that of the city.
From a medieval commandery to Louis XIV’s fort
Long before the fort was built, the site had been home, from the 12th century onwards, to a commandery of the Knights Hospitaller of Saint John of Jerusalem, from whom the fort takes its name. The complex comprised a church, a chapel, a hospital and the commander’s palace, completed in 1365. It was also during this period that a tower was built adjoining the Saint-Jean Tower, now known as the King René Tower, one of the oldest surviving buildings on the site.
In the 17th century, tensions between Marseille and King Louis XIV led to the construction of Fort Saint-Jean. On 2 March 1660, the king travelled to Marseille to reaffirm his authority. He then ordered the strengthening of the defences at the entrance to the Old Port with the construction of two forts – Fort Saint-Jean to the north and Fort Saint-Nicolas to the south – as well as a galley arsenal.
In 1679, when the people of Marseille rose up against royal authority, a moat was dug between the fort and the city to further isolate the military structure. Fort Saint-Jean subsequently retained its military function until the French Revolution, before being used as a state prison.
A monument marked by the Second World War
During the Second World War, the fort was occupied by the German army, which stored ammunition there. In August 1944, an accidental explosion destroyed a large part of the historic buildings. The damaged ramparts were partially rebuilt in the 1970s, whilst the courtyard of the King René Tower underwent major restoration in the early 2000s.
Archaeological excavations carried out on the site have also unearthed remains from the first Greek settlement in Marseille, dating back to the 6th century BC, bearing witness to the exceptional antiquity of this place.
Fort Saint-Jean today
Fully restored and incorporated into the Mucem since 2013, Fort Saint-Jean has become an unmissable destination for exploring Marseille’s heritage. Its ramparts offer a remarkable panoramic view of the Old Port, the Cathedral of La Major, the Mucem and the Mediterranean Sea.
The site is organised into two levels. The lower level is home to King René’s Tower, Saint-Jean Chapel, the entrance to the Officers’ Gallery and a building housing the DRASSM (Department of Underwater and Submarine Archaeological Research). The upper section allows visitors to explore the Officers’ Gallery, the remains of the old barracks, a former barracks building and the Fanal Tower, the fort’s emblem.
To gain a better understanding of the history of this iconic monument, you can also take a guided tour and discover the many secrets of Fort Saint-Jean.

Mucem in Marseille, Fort St Jean, cours de la commande

Bar Bateau, Fort Saint Jean©noctilio








