Maarten Dammers, 14/07/19 13:57:
That made me wonder: Do any of the other heritage organizations public linked open data or is the RCE the first to do this?
Several, I think. The most significant I remember were from Sweden and Finland. Even the Italian ministry published some linked (semi-open) data last year and Wikimedia Italia funded the import of the small part of it which was usable (about 30k items): https://www.wikidata.org/?curid=30576438#Luoghi_della_cultura
Federico