minnesotas state parks are spread across the state in such a way that there is a state park within  miles  km of every minnesotan the most recent park created is lake vermilion state park created in  currently the parks range in size from franz jevne state park with  acres  ha to saint croix state park with  acres  ha two parks include resources listed as national natural landmarks big bog state recreation area and itasca state park and six parks encompass national historic landmarks charles a lindbergh fort snelling mille lacs kathio st croix soudan underground mine and split rock lighthouse state parks  sites or districts across  minnesota state parks are on the national register of historic places nrhp including  parks with developments constructed by new deal-era job creation programs in the s