The Raceway at Belle Isle turned a public park island into one of America's most distinctive temporary circuits — 2.35 miles of waterfront straights, fountain-adjacent chicanes, and Armco barriers that made every IndyCar Detroit Grand Prix feel closer than the skyline suggested. CART, ALMS, and Tudor sportscar seasons all learned the same lesson: island grip, river wind, and zero runoff. This poster maps that geography as cartography — thick green linework for the racing surface, faint topo ghosts for the park elevation, and a CORNER POETRY sidebar that admits what every Belle Isle veteran already knows — history here bends through rhythm, not room to breathe.