English Heritage has announced a wartime dome in Norfolk, used to train anti-aircraft gunners, is one of its priority sites for rescue and repair.
A number of buildings in the region have also been added to the "at risk" register - including three in Suffolk and five in Norfolk.
Natalie Gray reports.
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A chilly start, then mainly dry and sunny through the day. A few heavy showers may develop and move east towards the end of the afternoon.
Hundreds of people have taken part in the annual Maldon Mud Race in Essex
The sun has kept shining across the Anglia region during April which has led to warm days but clear skies overnight have meant chilly nights