The Blockhouse was built on the easternmost part of Shirley Heights, comprising a fortified enclosure set on the highest point overlooking the sea and the Guadeloupe Passage. Beyond the fortified enclosure is a sprawling complex of barracks for officers and soldiers’ quarters, housing for senior commanding officers, stables, a powder magazine, cisterns and a catchment slope and gun platforms as well as servants’ quarters.
Today is in mainly a ruin other than the gun platforms, powder magazine and the main cistern water catchment.

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