The River Ravensbourne is a tributary of the River Thames located in southeast London, England. It flows through the boroughs of Bromley, Bexley, and Greenwich, covering a distance of approximately 10 miles. The river is known for its winding course and is surrounded by various parks and green spaces, providing a natural habitat for wildlife. Historically, the Ravensbourne has played a role in the development of the local area, with its banks being used for agriculture and industry. Today, it is primarily valued for its ecological significance and recreational opportunities, including walking and cycling paths along its banks.