Britain's Oldest Door is Westminster Abbey Relic that May Have Been Covered in Human Skin
Doors are an integral part of a building, and have been made commonly of wood or metal in the past. As an organic material, wood is highly susceptible to deterioration. Nevertheless, in some instances, the wooden doors of ancient buildings have survived through the ages.
United Kingdom Saint Peter King Edgar Victoria Tower Of The Houses Parliament Oxford Dendrochronology Laboratory Westminster Abbey
Source: ancient-origins.net