弧形钢棚下的都市广场：给行人的一片阴影

Design an urban shelter in the manner of Paulo Mendes da Rocha's Patriarca Plaza — a single curved steel canopy springing from one side of a busy downtown square and cantilevering right over the pavement and a subway entrance, giving shade and a landmark without occupying the ground. Compose a smooth white steel arc rising from a concrete abutment and reaching far out over the plaza with nothing supporting its far end, dense old commercial buildings around, crowds and street vendors beneath, a viaduct alongside, hard tropical sun with a crisp curved shadow, low upward view, 24mm lens, architectural photography, ultra photorealistic, 8K