It shall be the duty of a local authority, of each of the Ministers and of the appropriate agency, in formulating or considering any proposals relating to any functions of a local authority under this Act—
so to exercise any power conferred with respect to the proposals on the local authority, that Minister or, as the case may be, the appropriate agency as to further the conservation and enhancement of natural beauty and the conservation of flora, fauna and geological or physiographical features of special interest;
Subject to subsection (1) above, it shall be the duty of a local authority, of each of the Ministers and of the appropriate agency, in formulating or considering any proposals relating to any functions of a local authority under this Act—
In this section " building " includes structure.