Territorial analysis needs updated and verified localscale data. Nonetheless, official information is difficult to produce and often lacking in the cultural sector. For those reasons, Volunteered Geographic Information (vgi) is a major opportunity for territorial analysts. However, vgi data must be complete and spatially accurate. In this study the OpenStreetMap (osm) database is used to describe the geography of Italian museums; its quality is tested in relation to the official survey conducted by the National Institute of Statistics (Istat). Results show good levels of completeness (with 86% of the museums mapped on osm) and positional accuracy. Some concerns do arise about the reliability of tags and metadata.
Keywords: Territorial analysis, Volunteered Geographic Information (vgi); museum and cultural mapping.