Llancaiach Fawr Manor has been awarded a £943,200 grant, which will see its hidden attic - a former servants' quarters - opened up to the public for the very first time.
The Grade I listed Tudor mansion in Nelson, near Caerphilly, is restored and furnished as it would have been in 1645. The money will be used to improve and conserve the attraction, and also provide better access for wheelchair users.
Cllr Ken James at Caerphilly County Borough Council said the Heritage Lottery funding 'would help transform the way the past is presented to a modern audience'.
More top news
NFU Cymru is uniting with fellow members of the Wales Farm Safety Partnership to champion farm safety at this year’s Royal Welsh Show.
The Harbour, a series about life on the Tenby waterfront, will be broadcast on the main ITV channel, ITV Cymru Wales has announced.
New figures from anti-poverty charity The Trussell Trust found that 47% of children using foodbanks in its network were 5-11 years old.