OSM tag name=Humboldt-Schloss matches Humboldt-Schloss in these Wikidata fields:
Castles in Berlin | tourism=attraction, place=locality, historic=ruins, building=castle, historic=archaeological_site, historic=tower_house, building=ruins, historic=castle |
Palaces in Berlin | historic=castle, building=palace, historic=palace |
Parks in Berlin | leisure=common, landuse=recreation_ground, leisure=park, boundary=national_park |