Japan is blessed with a bounty of floral beauty to enjoy throughout the year, and flowers often pop up in some rather unique locations! One example of this is Fukuoka's Kirin Beer Factory, which sits next to a large field filled with an impressive number of cosmos flowers in the autumn months. In total, around 10 million cosmos flowers bloom during October, which can be appreciated either before or after a tour and tasting at the Kirin Beer Factory.
As is the case with all flower festivals, the dates can differ slightly from year to year depending on blooming conditions. It's recommended to check the official site closer to the season for a definite confirmation.
Do note that at the time of writing, the factory has suspended brewery tours in efforts to prevent against the spread of the novel coronavirus. Status updates and details on tour resumption will be posted on the official website.