The River Lee Navigation runs from rural Hertfordshire into the heart of London, and a picturesque and unbroken walking and cycling route runs the entire length of the river.
The River Lee is a natural river that has been improved for navigation, with straight sections added in to shorten the route. The Lee Valley Park follows much of the river, providing green open spaces, nature reserves, Lee Valley Park Farms and facilities for a variety of sports and watersports.
The 2012 London Olympics has led to a number of projects to improve the Lea Valley waterways for people and nature. A new riverside walkway has been created at the A11 in Bow, the towpath improved for walkers and cyclists and Three Mills House Mill has been restored.