Abstract: A tower for selectively supporting an elevator thereon includes an elongated structure that slidably supports the elevator therealong. The elongated structure defines a structure axis and includes at least two generally opposed first and second longitudinal structure sidewalls. Generally elongated first and second elevator retaining guides releasably secure to the first and second structure sidewalls, respectively, for guiding and retaining the elevator along the elongated structure. The first and second retaining guides extend generally radially outwardly from the elongated structure.