Citadelle de Saint-Florent, 15th-century citadel in Saint-Florent, Haute-Corse, France.

The Citadelle de Saint-Florent is a 15th-century coastal fortress featuring a central tower, two round turrets, and a square tower that overlook the Gulf of Saint-Florent and its harbor. The site contains multiple sections of fortifications that reflect different periods of construction and reinforcement.

Built in 1440 by Genoese doge Giano I di Campofregoso, the citadel was improved by the Genoese in the 16th century, by general Paul de La Barthe de Thermes in 1553, and again in the 18th century when the town strengthened its fortifications. It was transformed once more in the late 19th and early 20th centuries. In 1795 Pascal Paoli left Corsica for exile in England from this citadel.

The citadel remains a defining landmark for the coastal town and shapes how locals and visitors understand the area's identity. Walking through it, you sense the layered presence of different rulers who left their mark on this fortification.

The site is located on Route de la Citadelle in Saint-Florent and is visible from land and water, making it easy to find. It is best to wear sturdy footwear since paths can be uneven and some structures are undergoing restoration work.

The citadel was weak on its landward side: the 1837 traveller Antoine Claude Valery found only a detachment of twenty-five men there. The nearby Fort Gentili takes its name from the Corsican general who built it and defended it in 1794, surrendering only after General Dundas hauled artillery up the rocks of Mount Stolli.