GeoGraph - photograph every grid square

The Greenway has been created as a linear footpath and cycleway along the top of the embankment of the Northern Outfall Sewer. The sewer was built between 1860 and 1865 under the direction of Joseph Bazalgette for the Metropolitan Commissioners for Sewers at a cost of £164,000, and was designed to remove sewage from North London to Beckton. By the 1850s the River Thames in central London was effectively an open sewer since sewage drained directly into it. The 'Great Stink' of 1855 caused Parliament and the Law Courts to seriously consider moving away from the river. The Metropolitan Board of Works was set up in 1855, with the construction of a sewage system as its primary task.