OSM tag name=Ludwigsruhe matches Ludwigsruhe in these Wikidata fields:
| Castles in Schwäbisch Hall (district) | tourism=attraction, place=locality, historic=ruins, building=castle, historic=archaeological_site, historic=tower_house, building=ruins, historic=castle |
| Towns in Baden-Württemberg | place=village, place=suburb, place=town |