A woman visiting an historic windmill was airlifted to hospital after a sail broke off and fell to the ground.
The windmill only opens to the public one weekend a year
The visitor was left with cuts and bruises and a suspected broken finger after the accident a Chesterton Windmill in Warwickshire on Saturday.
The 17th Century windmill only opens to the public for one weekend a year. It was immediately closed for health and safety reasons.
A spokeswoman said she hoped the windmill would open in future years.
The Warwickshire County Council spokeswoman apologised to visitors and said: "We are sure many people will be disappointed, and we are very sorry for any inconvenience."
As many as 600 visitors were expected at the open day.