It is altogether appropriate that the Natural History Museum should have commissioned a Wildlife Garden (designed by Adam Loxton Partnership landscape architects). Fragility of the habitats results in it being sometimes closed to the public but the garden has a delicacy which is rare in urban open space. It might be best to close off ground level access and fly a tracery of coloured steel walkways through the vegetation to set off the polychromatic brickwork of Alfred Waterhouse's architecture.