Former Gibraltar artillery battery, now tourist Apes' Den for macaques.
Prince Ferdinand's Battery was an artillery battery in the British Overseas Territory of Gibraltar. The site, owned by the Government of Gibraltar, is now known as the Apes' Den, the main location for tourists to see Barbary macaques in Gibraltar, within the Upper Rock Nature Reserve.
Prince Ferdinand's Battery was an artillery battery forming part of the Fortifications of Gibraltar in the British Overseas Territory of Gibraltar. It is listed as an artillery battery fortification in Gibraltar and the site is owned by the Government of Gibraltar. Today the former battery is much better known as the Apes' Den. This area is the main location for tourists to see Barbary macaques in Gibraltar, making it a significant visitor focus within the territory. The Apes' Den occupies the area where the battery once stood, linking Gibraltar’s military past with its present‑day tourism centred on the macaque population. The site lies within the Upper Rock Nature Reserve. It is located at the base of the upper section of Charles V Wall, at the point where that wall is breached by Queen's Gate. This setting connects the battery location with other elements of Gibraltar’s historic defensive works and its distinctive topography. While many details about the battery’s construction, use, and condition are not specified, its identification as an artillery battery and inclusion among the Fortifications of Gibraltar underline its role in the wider defensive system that historically protected Gibraltar.