- barcelona-metropolitan.com locations/cardona-…
- barcelona-tourist-guide.com en/attractions/…
- paradorsofspain.com parador-de-cardona.aspx
- en.wikipedia.org Castle of Cardona
- guias-viajar.com en/tourism-spain/visit-catalonia…
- viator.com Barcelona-attractions/Castell-de-…
- turismoencatalunya.es en/Castle-of-Cardona.html
- atlasobscura.com places/castle-cardona
- barcelonalowdown.com cardona-castle-salt-mine-la-…
- tr.champagnethill.com 1184-cardona-castle-and-…
- actualidadviajes.com en/the-castle-of-cardona-…
- traveltospain.info listing/castle-of-cardona/