Since .7z is a high-compression format, you will need a third-party tool to extract it:
: Raw geospatial features like roads, buildings, and points of interest (POIs) in formats like .osm (XML), .shp (Shapefile), or .geojson . openmaps.7z
The file is a compressed archive that typically contains geospatial data from OpenStreetMap (OSM) . Likely Contents Since .7z is a high-compression format
: ASCII text files containing lists of coordinates (latitude and longitude) that can be imported into software like QGIS. openmaps.7z
Depending on where you downloaded it, the archive usually contains one of the following: