1787974 Poplar Recreation Ground: hot air balloon, 1892 (b/w photo) by English Photographer, (19th century); London Metropolitan Archives, City of London; (add.info.: Poplar Recreation Ground: stripped hot air balloon. Residencial houses can be seen below the ballon while a church spiral can be observerd in the background. Poplar, Metropolitan Borough of; Tower Hamlets, London Borough of); 穢 London Metropolitan Archives ; English, out of copyright.