The beauty of each bridge that crosses the Seine is inspiring. Each one has its own unique character, and some rank as the best in the world. Whether you are walking over them or passing under them on a cruise of the river, you cannot fail to be impressed by the stunning quality of their designs. All together, they add up to yet another major monument; some are monuments in their own right. Without these bridges the spine of Paris would be a giant void, and neighborhoods would be isolated from each other. Their success highlights the need to transform the highways along the Seine. The bridges are the great connector; the roads are the great divider.