OSM tag nat_name=Eltville matches Eltville Castle in these Wikidata fields:
OSM tag reg_name=Eltville matches Eltville Castle in these Wikidata fields:
| Castles in Hesse | historic=tower_house, place=locality, tourism=attraction, building=castle, historic=ruins, historic=castle, historic=archaeological_site, building=ruins |
| Museums in Hesse | building=museum, tourism=museum, tourism=attraction, historic=museum, tourism=gallery |