Where was Dragon Gate Inn filmed?
1967 Taiwanese wuxia film directed by King Hu
Wikidata records no filming location for Dragon Gate Inn (1967) 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 Taiwan, without naming a place, so it is not on the map.
Filming locations that are mapped there: Taiwan