From GibMap
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The Cathedral of Saint Mary the Crowned, in the centre of town, is built on the site of the chief mosque. During the Great Siege most of the Spanish and Moorish buildings were reduced to rubble by the constant barrage of shot and shell from the Spanish forces, but some of the early structures can still be seen. The courtyard of orange trees was reduced considerably in size in the nineteenth century by the British in order to widen and straighten Main Street.