Where was On Air filmed?
2008 South Korean television series
Wikidata records no filming location for On Air (2008–) 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