This tool gives a small glimpse into the upcoming ability to search Wikimedia Commons using Wikidata, finding results in many languages from the latter.
This is a demo only! There are currently <~1M images on Commons associated with a Wikidata item.
Also, "associated" currently only means "linked from"; could be "depicts", "made by", "located at"...
So, useful searches are limited – for now!
Search query : Example use (Kidwelly castle, but using German "Burg" instead)
WDQ query : Example use (any steel bridge)