London’s open spaces weave through housing estates; grand London plane trees overhang busy roads; and gulls settle in wet patches of local football fields. iGiGL is a great tool for a little armchair sightseeing of the 47% of Greater London that is green.Clicking on the intriguing shapes that outline London’s parks and open spaces will bring back a wealth of information on site uses and facilities, a description of the wildlife or habitats, and snippets of local interest or history.