Fort la Latte (also known as Château de la Roche Goyon) is a dramatic medieval fortress perched on the cliffs of Brittany’s Côte d’Émeraude (Emerald Coast), near Cap Fréhel, overlooking the English Channel, built on a rocky promontory jutting into the Channel, about 4 km from Cap Fréhel.
The fort guarded the Bay of Saint-Malo and the Channel approaches; besieged in 1379 by Bertrand du Guesclin during the Breton War of Succession .
It was strengthened in the 17th–18th centuries under Louis XIV with Vauban-style bastions and heated cannonball furnaces .
Then it declined after the Napoleonic era , until it was restored in the 20th century by Frédéric Joüon des Longrais , a historian.
