Fort Diamant, Military fort in Remire-Montjoly, French Guiana.
Fort Diamant stands along the coast with thick basalt and brick walls, featuring a V-shaped redan and a half-moon battery containing five cannon positions.
Construction of the permanent stone fortress began in 1840, replacing a wooden structure from 1650 that protected French settlers from other Europeans and Amerindians.
The site received recognition as a French Historic Monument in May 1980, marking its importance in the colonial military heritage of French Guiana.
Visitors can access the fortress ruins along the main beach road and examine the three distinct sections, including the military quarters and defensive positions.
A deep water-filled moat encircled the entire structure, while its strategic location oversees the entrance to the Mahury River estuary.
Location: Remire-Montjoly
GPS coordinates: 4.87036,-52.24750
Latest update: November 25, 2025 18:23
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