There is intense activity at the Harrogate Convention Centre which is being transformed into what is thought to be a makeshift hospital.
Army personnel, the police, fire crews and Yorkshire Ambulance Service crews are on site and are believed to be familiarising themselves with the layout of the centre which is more used to hosting conferences.
The NHS has refused to comment on the work being carried out at the centre, but it is thought it is being prepared to become a so-called Nightingale hospital like those already planned in London, Manchester and Birmingham.
Concrete access ramps are being built at the entrances and dozens of construction staff are working at the complex.
It has been reported that it may house 500 beds as the coronavirus crisis continues.
NHS signs have been posted at the centre directing ambulances to one entrance and staff to another.