a young architect points upward at the bridge's curved stone structure while explaining to her assistant. Her finger traces the graceful curve that spans from one side of the river to the other. The bridge's stonework forms a perfect bow-like curve that distributes weight evenly across the span. Below, boats pass easily under the high curved opening. Townspeople walk across the bridge, with some pausing to admire the elegant curved design. A few children lean over the curved railings to watch the water flow beneath. the curved shape of an arch formed like a bow or bridge