Rugged concrete buildings, fortress-like structures, brutalist architecture, harsh angular lines, raw unfinished surfaces, industrial materials, poured concrete walls, steel beams, minimal ornamentation, dramatic natural lighting, clerestory windows, skylights, diffused soft light, muted color palette, urban cityscape, dense forest surroundings, overcast sky, low-key ambient occlusion, 1/1 composition, realistic textures, atmospheric perspective.