Geograph - photograph every grid square

A network of walks from three points on the River Thames, including the Woolwich Flood Barrier, to Crystal Palace Park, linking together the open spaces of SE London.
Website: Link
See also Link

The Capital Ring is a surprisingly green route that encircles London. Distance is 78miles; it threads together parks and open spaces, mostly following pleasant residential roads in between. The route is an initiative of the London Walking Forum. The route is very well signed, with a Big Ben logo TQ1678 : Three walk logos, Gallows Bridge. The route is a walker’s equivalent of the North and South Circular roads. Link