Llancaiach Fawr Manor has been awarded a £900,000 grant, which will see the former servants' quarters in a hidden attic opened up to the public for the first time.
The Grade One listed Tudor mansion in Nelson, near Caerphilly, is restored and furnished as it would have been in the seventeeth century, as Hannah Thomas reports.
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The star celebrates beating Justin Bieber into second place as her song becomes a hit again after a performance at the total solar eclipse.
Later in the night cloud will thicken bringing hill fog, mist and some patchy drizzle by the early hours.
The Welsh singer sang her infamous track during yesterday's solar eclipse.