Don't forget that most of Greenwich Park closes tomorrow for four weeks till 8 September. The Children’s Playground and parts of The Flower Garden will remain open, except on 30 July (for an Olympic Cross Country event). The Avenue is closed to cars till 1 October. The Royal Observatory will be closed on 7 July, reopening on 4 August. The National Maritime Museum will remain open throughout the Olympic and Paralympic Games.
Maryon Wilson Park: hilly, great views, bonus zoo (53 to Charlton House)
Southwark Park: flat, lovely groves and hidden places, bonus art galleries (47 to Surrey Quays)