Dr Manon Williams, Welsh trustee of the Heritage Lottery Fund, told ITV News she believes our culture and heritage is woven into the landscape and it's important to preserve it.
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Rain clipping the far north through the evening but elsewhere staying dry with some sunny spells.
Public Health Wales figures show 25 more cases of the virus have also been confirmed.
Photos taken on Saturday morning show Roald Dahl Plass strewn with empty beer bottles and discarded canisters of laughing gas.