Tourism officials in Buxton are hoping it can become a world-class "healthy holiday" destination, thanks to in a multi-million pound redevelopment of one of its most treasured buildings. The Crescent opened in 1789 as a spa to rival Bath. But in recent decades, the building lay empty and fell into ruin. Now the once-thriving thermal baths will make a comeback alongside a luxury hotel and heritage centre. Sarah Rogers has been to take a look.