塔状构造体：核心筒与外挂设备舱

Design an exposition landmark tower in the manner of Kiyonori Kikutake as a white space-frame lattice mast with spherical observation capsules clamped onto its joints at different heights, deliberately looking unfinished and extendable. Compose the open steel truss reading as pure structure, four or five white spheres at scattered nodes with access tubes, no cladding anywhere, a wide open expo plaza below, bright hazy summer sky, low view straight up the mast, 24mm lens, architectural photography, ultra photorealistic, 8K