This gunnery was the only one in Wales to be built and fully used
A Second World War gunnery on Llandudno's Great Orme has been granted special protection by Cadw.
The coastal artillery school off the western side of Marine Drive has now been officially scheduled by the historic buildings and ancient monuments body.
Cadw say the monument is of national importance as material evidence of the preparations undertaken for the defence of the UK during the Second World War.
They also said the site was unique in Wales as the only location where all of the coast artillery gun emplacements then in use were built and used.
Whilst not the same as becoming a listed property, scheduling does mean the site will be eligible for National Assembly upkeep and improvement grants.
Councillor Philip Evans of Llandudno who has lobbied for the scheduling said: "I'm really pleased that Cadw have carried out their research and come to the conclusion that the site is important.
"The scheduling of the site will give it a special status. It will be acknowledged on maps and be an added attraction to people who visit the Great Orme."
The Royal Artillery gunnery school was established in Llandudno in 1940. It was relocated from Shoeburyness, southern England, because of the potential threats of enemy invasion and bombing.
The gunneries stretch for a kilometre along the coast and were in full use until the end of the war.
Designed by the Royal Engineers, the school trained officers and other ranks in the art of coast artillery, radar technology, and assisted in the development of new weaponry, tactics and instrumentation.
Despite being subjected to an official clearance scheme in the 1960s, much of the site off Llys Helyg Drive, including its gunnery placements and other structures, have survived.
Cllr Evans is delighted that they will no longer be under threat.
He said: "It's quite visible from Marine Drive and is popular with walkers. The gunnery is also pointed out on the bus trip round the Orme."