OSM tag name=Kaiserpfalz Gelnhausen matches Kaiserpfalz Gelnhausen in these Wikidata fields:
OSM tag alt_name=Barbarossaburg matches Barbarossaburg in these Wikidata fields:
OSM tag name=Kaiserpfalz Gelnhausen matches Gelnhausen Kaiserpfalz in these Wikidata fields:
| Castles in Hesse | building=castle, historic=tower_house, building=ruins, historic=archaeological_site, tourism=attraction, place=locality, historic=ruins, historic=castle |
| Imperial palaces of the Holy Roman Empire | historic=castle, building=palace, historic=palace |