OSM tag name=Tomen Castell matches Tomen Castell in these Wikidata fields:
| Castles in Conwy County Borough | historic=archaeological_site, historic=ruins, historic=castle, building=ruins, building=castle, historic=tower_house, tourism=attraction, place=locality |
| Castles of Llywelyn the Great | historic=archaeological_site, historic=ruins, historic=castle, building=ruins, building=castle, historic=tower_house, tourism=attraction, place=locality |
| Grade I listed castles in Wales | historic=archaeological_site, historic=ruins, historic=castle, building=ruins, building=castle, historic=tower_house, tourism=attraction, place=locality |