autumn city England english fall Great Britain green London nature park plane Regent's Park space sunlight trees urban beauty color colour golden peaceful russet Sussex tawny yellow branches countryside fence field footpath path rural straight track trail tree winter beautiful centre cultivar dahlia flower garden middle nestling petals pink unfolding conifers edge forest landscape natural pines Pinus trunks lane leaves road shade boundary buttercups damp margin marshy meadow ranunculus spring bank barrage barrier channel coast dyke embankment estuary river shore water Birmingham brick community home house street suburb town