OSM tag name=Kaltenburg matches Kaltenburg Castle in these Wikidata fields:
| Castles in Heidenheim (district) | historic=tower_house, historic=ruins, historic=castle, building=ruins, historic=archaeological_site, place=locality, tourism=attraction, building=castle |
| Ruined castles in Germany | historic=tower_house, historic=ruins, historic=castle, building=ruins, historic=archaeological_site, place=locality, tourism=attraction, building=castle |