Riverside auditorium, modern architecture, curved lines, glass walls, steel beams, wooden floors, comfortable seating, soft cushions, natural light pouring in, panoramic views of the river, sailboats docked nearby, seagulls flying overhead, lush greenery surrounding the building, flowers blooming on the rooftop garden, gentle breeze rustling leaves, warm sunset ambiance, golden lighting, 3/4 composition, shallow depth of field.