Prince Charles has unveiled a plaque at the restored and renamed Redhouse Town Hall in Merthyr Tydfil.
He told onlookers he is "very impressed" with the building.
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Staff at seven museums in Wales are taking strike action this weekend over plans to cut their pay.
It's not too bad out there tonight. A few showers over northern areas, but dry elsewhere with temperatures degrees milder than last night.
Traders across Wales have told ITV News the migrant crisis in Calais is having a 'devastating' impact on their business.