HAMPSTEAD HEATH, FROM THE FLAGSTAFF, LOOKING WEST.
Hampstead Heath is a possession of which Londoners may well be proud. The flagstaff against the pond stands 430 feet above the sea level, and the air thereabout is delightfully bracing. So picturesque and unspoilt is the Heath that it is hard to realise the proximity of the metropolis. It extends over some 250 acres. The best outlook is undoubtedly the west-across the country to Hendon and the Welsh Harp, to Harrow-on-the-Hill with its conspicuous church spire, and to Windsor, whose Castle on a clear day is distinctly visible. On a Bank Holiday the Heath is thronged by hundreds of thousands of holiday makers from London, whose "fun" waxes fast and furious.
source: The Queen's London : a Pictorial and Descriptive Record of the Streets, Buildings, Parks and Scenery of the Great Metropolis, 1896