“Leonida's six confirmed regions are Vice City, the Leonida Keys, Grassrivers, Port Gellhorn, Ambrosia, and Mount Kalaga National Park.”
Grassrivers = Everglades-style wetlands; Port Gellhorn = declined tourist zone (cheap motels, rundown shopping); Ambrosia = industrial/agricultural interior (Allied Crystal sugar refinery); Mount Kalaga = northern forests/canyons/rivers.