River Ravensbourne, River in the London boroughs of Lewisham, Greenwich and Bromley, England

The River Ravensbourne is a river in south London that rises near Caesar's Well in Bromley and flows north through Lewisham and Greenwich before joining the River Thames at Deptford Creek. Its course runs through parks, housing areas, and stretches where the water is channeled between concrete or restored natural banks.

During the Middle Ages, the river powered a series of corn mills that served communities across south London and were central to the local economy. As the city grew, much of its course was straightened and lined with concrete to manage water flow through urban areas.

Several sections of the river have been restored by local groups, turning concrete channels back into natural banks where birds and other wildlife can be spotted. Around Beckenham Place Park, the water draws people who come simply to walk beside it and watch the river move.

Footpaths and cycling routes follow the river through several parks, with Beckenham Place Park offering some of the most accessible stretches. It is best to visit in dry weather, as some sections close to the water can become muddy after rain.

Every year on May 1st, a traditional dance group gathers at Caesar's Well, the river's source, to mark the start of spring with an old folk custom. The event is little publicized and easy to miss, making it a rare find for anyone passing through at the right time.