The principal river in London is the River Thames. Stretching approximately 215 miles, the Thames flows through southern England and is vital for both historical and modern commerce. It has played a crucial role in London’s development, serving as a trade route, a source of water, and a cultural landmark. Landmarks such as the London Eye and Tower Bridge are situated along its banks. The river also supports various recreational activities, making it a central element of the city’s lifestyle and tourism.