A picture display system, such as for a table top display, utilizing a plurality of tetrahedronal shaped blocks which feature four planar faces of equilateral triangles. In the system, the blocks are positioned within a tray-like housing, preferably six-sided, where the housing includes a base or floor having an array of tetrahedronal shaped recesses or pegs for strategically positioning the respective blocks to expose one of the triangular faces, with each face having a picture segment. With the blocks so positioned, the picture segments reveal a full or completed picture.