1Scope of planning schemes.
A scheme may be made under this Act with respect to any land, whether there are or are not buildings thereon, with the general object of controlling the development of the land comprised in the area to which the scheme applies, of securing proper sanitary conditions, amenity and convenience, and of preserving existing buildings or other objects of architectural, historic or artistic interest and places of natural interest or beauty, and generally of protecting existing amenities whether in urban or rural portions of the area.