As I was walking to Hampstead Heath on Saturday I found Kristin Baybars. I don't know what to tell you except you have to go there, it is a magical, miniature, place of wonder. I didn't have my camera but others have taken photos, like parimauk. Sometimes you just don't know what you're gonna find, or how it is gonna inspire you. 7 Mansfield Road, London NW3 2JD.
And if you fancy a swim, Amy you are right, the lady's pond is as happy a place as you'll find in London!