Two maps in one desk globe. Unlit, the Odessa Antique shows a topographical political map using symbols and colours for different elevations and terrain types, alongside international shipping routes, significant cities and major mountain peaks. Turn the light on and the antique two-way map reveals the routes of major explorers' expeditions and ocean-floor features such as mid-ocean trenches, seamounts, basins and ridges, with the continental shelf graded in beige tones according to depth.