St Catherine's Fort, Tenby
The Royal Commission on the Defence of the United Kingdom, which Lord Palmerston had established in 1859 in response to a perceived threat of invasion by Emperor Napoleon III of France, recommended the fort's construction. When considering the defence of the Royal Dockyard at Pembroke Dock and the anchorage at Milford Haven, the Commissioners believed that there was a danger that an enemy force might conduct an amphibious landing on a beach on the southern Pembrokeshire coast followed by an overland attack on the naval facilities. The Commissioners envisioned a chain of coastal artillery forts extending along the coast from Tenby to Freshwater West covering all the potential landing sites; ultimately, only this fort at Tenby was constructed. Wikipedia
St Catherine's Fort, Tenby
The Royal Commission on the Defence of the United Kingdom, which Lord Palmerston had established in 1859 in response to a perceived threat of invasion by Emperor Napoleon III of France, recommended the fort's construction. When considering the defence of the Royal Dockyard at Pembroke Dock and the anchorage at Milford Haven, the Commissioners believed that there was a danger that an enemy force might conduct an amphibious landing on a beach on the southern Pembrokeshire coast followed by an overland attack on the naval facilities. The Commissioners envisioned a chain of coastal artillery forts extending along the coast from Tenby to Freshwater West covering all the potential landing sites; ultimately, only this fort at Tenby was constructed. Wikipedia