Fort Diamant, Military fort in Remire-Montjoly, French Guiana.
Fort Diamant is a military fortress ruin along the coast with thick basalt and brick walls forming a V-shaped redan and defensive positions. The structure is divided into three distinct sections containing former military quarters and remains of cannon emplacements.
A wooden fort was first built in 1650 to protect French settlers from rival Europeans and indigenous peoples. In 1840, construction of the permanent stone structure began, replacing the original wooden fortress.
The site reflects its role as a French military outpost, and visitors walking along the shore can observe how the fortress was built to project power over the region. Its placement and design reveal the colonial priorities of the time in defending territorial interests.
The ruins can be accessed along the main beach road and are easy to explore on foot. Visit during low tide or calm weather for the safest and most comfortable experience on the rocky coastal terrain.
A deep moat filled with water once surrounded the entire structure, making it a formidable defensive position. This water barrier demonstrates how carefully the builders chose every detail to control access to the river entrance.
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