Eighteenth-century artillery battery and Military Heritage Centre in Gibraltar.
Princess Caroline's Battery is an artillery battery in Gibraltar’s Upper Rock Nature Reserve, part of the Fortifications of Gibraltar. Built in 1732 and renovated in 1905 for a 6‑inch Mark VII gun, it is now decommissioned. Its underground magazines house the Military Heritage Centre and a memorial chamber.
Princess Caroline's Battery is an eighteenth-century artillery battery within the Upper Rock Nature Reserve in Gibraltar, part of the Fortifications of Gibraltar. Built in 1732, it was named after Princess Caroline, the third daughter of King George II of Great Britain. The position lies on the northern face of the Rock at the junction of Willis's Road and Queen's Road, above the Moorish Castle and below Princess Anne's Battery, with access from town via Willis's Road. The battery saw action during the Great Siege of Gibraltar and later developments reflected changing artillery technology. In 1871 it mounted a 9‑inch rifled muzzle‑loading gun on an Elswick Ordnance Company carriage and platform. A major renovation in 1905 installed a 6‑inch Mark VII gun on top of the underground magazine. The gun and its coastal defence role were eventually decommissioned, but the gun emplacement, hoists, underground magazines and crew rooms remain. Today these underground spaces house the Military Heritage Centre, a small exhibition run under the Gibraltar Tourist Board. Displays include weapons, ammunition and other artefacts from the eighteenth century onwards, regimental roll calls, service ensigns and a Memorial Chamber. A dedication plaque honours all who made “the supreme sacrifice” in defence of Gibraltar.
