I would probably circumnavigate the green by going into all four bunkers ............ please log in to view this image
You must have a strong sphincter... There's two big towers just up the road from me at Beulah Hill and Crystal Palace and I regularly see workmen up near the top of them. I don't think I'd be able to move that high up...
I used to live at the highest point of Sydenham Hill in a top floor flat and the view over the capital on a clear day was something special so add another 700 feet and I doubt there would be anything better in London...