Where was Chōriki Sentai Ohranger filmed?
Japanese tokusatsu television series
Chōriki Sentai Ohranger (1995–) was filmed in Tokyo Dome City Attractions and Nasu Highlands, 2 places named in its Japanese Wikipedia’s スタッフ section, in Japan. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Part of the Super Sentai Series
Places per Japanese Wikipedia's スタッフ section
Japanese Wikipedia’s スタッフ section names 2 places. Each links to the sentence that says so.

