Hello,
just to be sure: This object has not been tagged historic=castle like castle normally are, but was tagged archaeological_site=castle. This was a value not in use and was breaking the tagging scheme of archaeological sites – tagged by the very mapper who set out to restructure the historic=archaeological_site family half a year ago with renaming and mechanically re-tagging site_type=, and coming up with quite a few out-of-scheme values, with very little communication.

Since nothing is left of this castle to be seen (aerial imagery shows a plain meadow), mapping may be questionable in the first place, but if mapped, the tagging scheme needs to be under historic=archaeological_site. Given that the structure has completely disappeared and given the relatively short time that castles in the other meaning of the term as non-defensive “stately home” have existed, it is not plausible that the former structure has been anything than a defensive fortification. So I specified this, not removing information, but adding information by being more precise.

There isn’t yet a clearly established tagging scheme for former, now archaeological stately homes, palaces, and the like. Because of the ambiguity of the term, it should certainly not be archaeological_site=castle.
