| +/- boundary=national_park
Used for boundaries of national parks
A national park is a relatively large area of land declared by a government (just as boundary=administrative are declared/recognised by governments), to be set aside for human recreation and enjoyment, animal and environmental protection. This would normally also come with restrictions on human activity, particularly development, for the protection of wildlife and scenery. National parks are often named "X national park" (with translation)
- leisure=nature_reserve - Like a national park, a nature reserve is about protecting wildlife etc. The distinction is unclear and is under discussion, but some suggestions are: nature reserves are smaller areas than national parks, National parks are rather like administrative boundaries around large areas (and may in fact include cities) whereas nature reserves are more evident on-the-ground.
- boundary=protected_area - A more recently introduced tag with a more verbose tagging scheme which can deal with all kind of protections and protection levels. It attempts to encompass both nature reserves and national parks, but so far been used less.