GIS is a powerful tool for density analysis of selected features or artifact types across a site, or of site types across a region. Use ArcGIS Spatial Analyst to analyze clustering, proximity, orientation, intervisibility, and other spatial relationships.
Visualize these patterns and relationships with ArcGlobe, part of the ArcGIS 3D Analyst extension. ArcGlobe provides continuous, multiresolution, interactive viewing of geographic information. Like ArcMap, ArcGlobe works with GIS data layers, displaying information from a geodatabase and all supported GIS data formats.
Take a look at case studies, demos, and books and literature.