A historic rail museum has been left devastated by bushfires which continue to burn in the NSW Hunter Valley, as well as other parts of the state.
More than 200 firefighters fought two blazes fuelled by high temperatures and winds on Wednesday at Black Hill and Richmond Vale, near Cessnock.
The volunteer-run Richmond Vale Train Museum was caught in the path of one of the fires, with museum chairman Peter Meddows saying the damage bill would be about $1 million.
"It was total devastation, there was smoke, things smouldering," he said, adding the museum's buildings remain standing but historically significant train carriages had been lost forever.
"An 1880 restored coal hopper is now just ashes.
"It's a bit heartbreaking.
"We'll keep going, there's no doubt about that, it's just going to take us time to recover."
NSW Rural Fire Service superintendent Paul Jones said there had been no reports of major property damage in the region but more will be known in coming days.
Crews worked overnight to try and contain the blazes at Black Hill and Richmond Vale.
"There is still a lot of work to be done," Mr Jones said in a statement.
"I would encourage all residents to remain vigilant and continue to be prepared in the event that a fire should start near their property."
The RFS continues to fight a 1700 hectare bushfire north of Tuncurry on the NSW mid-north coast and a fire south of Batemans Bay, on the south coast.
Bushfire danger ratings have been eased in many parts of NSW for Thursday following a cool change, but the state's Far North Coast, North Coast, Greater Hunter and New England regions remain a very high fire risk.
Meanwhile in Sydney, a man is expected to face court charged with lighting a fire in bushland off the Berowra track on Wednesday