Where was Robin Hood (2006–) filmed?
British television programme (2006–2009)
Wikidata records no filming location for Robin Hood (2006–) at all, not a place, not even a country. There is nothing to pin, and this page says so rather than guessing.
Why there is no pin
Its Wikipedia article also says it was filmed in Hungary, without naming a place, so it is not on the map.
Filming locations that are mapped there: Hungary