Looking south-east from the meteorological instruments platform on the roof of the Magnet House in the grounds of the Royal Observatory, Greenwich, showing the South Building or New Observatory, completed in 1896. The north and west wings are the elevations in view. The dome is open to reveal the Thompson 26" telescope. A very similar view to negative number P39986, taken on the same occasion but the wind direction, as shown by the weather vanes, has changed.