A nice page with all the various NPS designations: https://www.nps.gov/articles/nps-designations.htm https://www.nps.gov/articles/nps-designations.htm TIL of

A nice page with all the various NPS designations: https://www.nps.gov/articles/nps-designations.htm https://www.nps.gov/articles/nps-designations.htm TIL of National Preserves and National Reserves, which are different.... The parkways are also somewhat odd. I didn't know NPS operated so many miles of urban roadway.