The term SEINE CITY ON THE refers to two cities located on the Seine River in France. The first city is Paris, which is the capital of France and one of the most visited cities in the world. It is known for its iconic landmarks such as the Eiffel Tower, Notre Dame Cathedral, and the Louvre Museum. The second city is Rouen, which is a port city located in the Normandy region of France. It is known for its Gothic architecture and its historical connections to Joan of Arc.