So what do you do, I ask Rachel Flynn. “Equine photography,” she says. I nod vaguely. “I photograph horses,” she explains. “Back in Australia.” And she does, very well, if her website is anything to go by. Based in Melbourne, Rachel is visiting friends in Halifax and is browsing round the bright, stylish new shops at the town’s Piece Hall. This superbly restored building – which Prince Charles described as “marvellous” when he visited earlier this year – is one of 12 Yorkshire locations featured in Historic England’s newly published Irreplaceable: A History of England in 100 Places.