Parciau cenedlaethol Cymru: Gwahaniaeth rhwng fersiynau

|13||[[South Downs National Park|South Downs y De]]||12 Tachwedd 2009 <ref name=sdann>{{cite web | url= http://www.defra.gov.uk/news/latest/2009/country-0331.htm |publisher= Defra | title= New South Downs National Park announced | date= 31 March 2009 | accessdate= 31 March 2009}} {{Dead link|date=September 2010|bot=H3llBot}}</ref>||{{convert|1641|km2|sqmi|disp=table}}