Hampstead Heath is a large park in north of London, which I'm lucky enough to live right next too. Parts of it feel as though you are 50 miles outside of London. It's a beautiful place to go for walks and watch the seasons change, plus there is a great little Italian cafe to sit and have a capuccino in :)
This may be changed to four seasons at a later date but I quite like finishing on the image of the snow falling on the trees.
Thankfully the Nikon D200 has pretty robust weather seals, by the end of the last sequence there was almost 2cm of snow settled on my camera!