The castle on the 1-cent coin — a third wave from the thread

Italy&rsquo;s most embarrassing absence is fixed: Castel del Monte — Frederick II&rsquo;s octagonal crown, a UNESCO site, the castle on Italy&rsquo;s 1-cent coin — was invisible to the atlas because Wikidata now types it as a set of museum classes, not a castle; no castle query could ever find it. It is joined by its Hohenstaufen kin Castello Svevo in Bari , the sea-front castle of Trani and the…