1. A three-dimensional object display apparatus, comprising: three-dimensional object generation means for generating a three-dimensional object by laying out a plurality of image data to surfaces of a solid, said three-dimensional object being made in a three-dimensional shape to be displayed on a display section; selection operation means for selecting an attribute of said plurality of image data; and control means for sorting said plurality of image data into a plurality of categories based on said attribute, for switching, in response to said attribute selected, the three-dimensional shape of said three-dimensional object, for determining a number of the plurality of categories, for determining a number of said surfaces of the solid based on the number of the plurality of categories, and for attaching said plurality of image data to said surfaces of the solid based on the plurality of categories.