Genoese Batteries - Credit: Wikimedia Commons
Genoese Batteries are a pair of artillery batteries in the British Overseas Territory of Gibraltar. The Upper and Lower Genoese Batteries defended the south front of Gibraltar together with the Flat Bastion, South Bastion, Prince Ferdinand's Battery and Healy's Mortar. They were originally built by the Moors or Spanish but added to by the British in the 18th century. Read more on Wikipedia
Source: en.wikipedia.org