Issued by Canada in 1971, this striking 20-cent postage stamp celebrates World Environment Day and the growing awareness of urban environmental challenges. The design, by painter and graphic artist Allan Fleming, depicts a vivid multicolored flower rising above a dense, monochromatic cityscape—symbolizing hope, renewal, and nature’s resilience amidst industrial expansion. The juxtaposition of the organic and the mechanical reflects the early environmental movement’s message: the need for harmony between human progress and ecological preservation. A compelling and artistic issue for collectors of environmental and modern thematic stamps.