Britain’s oldest working mill may be forced to close if the owners can’t raise £125,000 by June.
The Winchester City Mill, which dates back to 1086, is in need of urgent repair due to flood damage.
The National Trust which owns the property is aiming to raise the funds through a series of events such as a sponsored rubber-duck race.
The National Trust said: “We now have to make permanent repairs within the next 12 months to ensure that the structure stays standing. Time is pressing and we’re not able to begin this important work until the entire amount needed is raised.”
The mill, on Bridge Street, attracts more than 40,000 visitors a year.