The outdoor recreation system shall consist of all state parks; state recreation areas; state trails established pursuant to sections 84.029, subdivision 2, 85.015, 85.0155, and 85.0156; state scientific and natural areas; state wilderness areas; state forests; state wildlife management areas; state aquatic management areas; state water-access sites, which include all lands and facilities established by the commissioner of natural resources or the commissioner of transportation to provide public access to water; state wild, scenic, and recreational rivers; state historic sites; state rest areas, which include all facilities established by the commissioner of transportation for the safety, rest, comfort and use of the highway traveler, and shall include all existing facilities designated as rest areas and waysides by the commissioner of transportation; and any other units not listed in this section that are classified under section 86A.05. Each individual state park, state recreation area, and so forth is called a “unit.”