Although they are called externally restored Tenshu, it was inevitable for some Tenshu to be different in details such as the scale, place, and shape of their windows or the curving degree of their roofs as a result of the requirement to comply with the Building Standard Act.
外観復元とは言うが、細部では建築基準法に則した結果としてどうしても窓の規模・場所・形状が異なったり、屋根の反り具合が異なる場合がある。