 As of May 2020 there are 163 SSSIs in Norfolk, out of which 123 are biological, 25 are geological and 15 are both biological and geological.Sixty-one sites are Special Areas of Conservation, forty-four are Special Protection Areas, thirty-two are Ramsar sites, forty are Geological Conservation Review sites, thirty-five are Nature Conservation Review sites, eighteen are National Nature Reserves, ten are Local Nature Reserves, twenty-eight are in Areas of Outstanding Natural Beauty, one is on the Register of Historic Parks and Gardens and three contain Scheduled Monuments.Twenty-two sites are managed by the Norfolk Wildlife Trust, one by the Suffolk Wildlife Trust, three by the National Trust, one by the Royal Society for the Protection of Birds and one by the Wildfowl & Wetlands Trust.