This research tested a workflow for computationally generating 3D models and perspectival renderings of geographic scale landscapes. Four sites across the United States were selected as test cases: Mt. Hood National Forest, OR; Great Smoky Mountains National Park, TN and NC; Kauai, HI; and Zion National Park, UT. The proposed workflow uses free, publicly available GIS data and operates with software tools of the landscape architecture profession – ArcGIS Pro for geospatial data analysis and visualization; Rhino 3D as a modeling environment; Grasshopper to computationally model the terrain and apply landscape materials and assets; and Enscape for rendering.