CKAN Spatial is a comprehensive geospatial extension that adds powerful geographic capabilities to CKAN. It provides geospatial dataset search with interactive bounding box widgets, spatial metadata fields, and harvesting of geospatial data from various sources including CSW servers. The extension includes PostGIS integration for spatial database operations, ISO 19139 metadata harvester for geospatial standards compliance, and CSW server functionality using pycsw. It supports various coordinate reference systems, spatial indexing in Solr, and provides map widgets for dataset discovery. The extension is essential for organizations working with geographic data and needing to comply with spatial data infrastructure standards.