The Seine River is a major waterway in northern France, flowing through the heart of Paris. It stretches approximately 777 kilometers (483 miles) and is known for its picturesque views and historical significance. The river passes several famous landmarks, including the Eiffel Tower and the Notre-Dame Cathedral. The Seine is an important transportation route and has been used for trade since ancient times. It is also a popular spot for tourists, who enjoy boat cruises and scenic walks along its banks. The river's basin supports diverse ecosystems and contributes to the region's natural beauty.