Lille was part of Spain until 1667 when it was captured by the French. Louis XIV immediately ordered the construction of the citadel to defend the newly acquired city. It was one of 47 fortresses built during his reign.
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| Citadel de Lille |
The citadel used the junction of the two rivers and swamp land to provide natural defences. A system of locks and water gates allowed land around the citadel to be flooded. if required. The pentagonal star shape allowed mutual support and enfilading fire to all approaches. The defences consisted of a series of canals, moats, bastions and ramparts. |
| Citadel de Lille and City |
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| Citadel de Lille |
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| Citadel de Lille - Canal Moat |
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| Citadel de Lille - Outer Wall Fortification |
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| Citadel de Lille - Entrance though outer wall |
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| Citadel de Lille - Entrance to main citadel |
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| Citadel de Lille - Entrance |
The Citadel is still a functioning military installation. It is the Headquarters of the French Army Rapid Reaction Corps.
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| HQ Rapid Reaction Corps France |