Geodesic Dome Shadow Pattern on Concrete Floor

Rhythmic geometric shadows stretch across the ribbed concrete floor of a lobby in Hiroshima. Triangular and hexagonal forms interlock in a precise grid, cast by an unseen geodesic dome structure above. Dim blue light from the evening sky falls through tall windows, mixing with the warm glow of interior lamps to create a muted palette of slate grays and soft ambers. The polished concrete surface reflects these shapes with a subtle sheen, deepening the sense of depth. Sharp lines define the edges of the pattern, while the texture of the ribbed floor adds a tactile contrast to the smooth geometric forms. The composition remains minimalist, showing the structural order against the quiet blue hour atmosphere.