Abstract: A transition module is provided for use in constructing a modular trophy base including one or more column modules having end plates at the upper and lower ends thereof. The transition module includes a hollow closed peripheral wall having opposite ends, the perimeters of which respectively define predetermined closed figures which are substantially different from each other in shape and/or size. Each of these ends is adapted for mating engagement with the end plate of an associated correspondingly-shaped column module, with the hollow end of the transition module disposed in surrounding press-fitted relationship with a raised portion of the end plate. Thus, the transition module may be used at each end of a single column module to provide transition between the column module and other members, or may be used to provide the transition between two different column modules.