In Canada. For more information see the Related Link shown below.
Actually, the Black Hills, located in South Dakota, and stretching into Wyoming, include six national parks and monuments: 1. Mount Rushmore National Memorial 2. Badlands National Park 3. Devils...
National parks are established by the governing bodies of whatever country they happen to be in. In the U.S. that would be the U.S. Congress.
It is a place of natural beauty and of archaeological significance. www.nps.gov/zion
National parks are designated by acts of Congress, and the legislation to do so occurs like any other piece of legislation in that body.