Fuerte de Isla Verde

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Fuerte de Isla Verde (English: Green Island Fort) was a military installation formerly located in Algeciras, Spain. It occupied the Isla Verde (English: Green Island), which gave its name to the city as a whole (via the Arabic name Al-Jazira Al-Khadra', English: Green Island, corrupted into "Algeciras"). The elongated island, which stood a short distance offshore of the city's old town, was already the site of an artillery battery in 1720. In 1734 the fort was constructed on the island to the plans of the military engineer Juan de Subreville. Further remodeling took place in 1745 under Lorenzo de Solís. The installation, which followed the roughly triangular shape of the island, was initially equipped with three batteries. These were:

The Algeciras Battery (known from 1745 as the San Cristobal Battery, English: St. Christopher's Battery), situated on the eastern side of the island. It faced northwards and controlled the maritime access routes to the New Town of Algeciras. It was about 20 metres (66 ft) wide and could accommodate four or five guns. The Main Battery (Santa Barbara Battery, English: St. Barbara's Battery, from 1745), facing southeasterly towards the entrance of the Bay...