In Kitakyushu, there is Kokura Castle.

When you travel to Fukuoka, you'll want to go to the suburbs. If you're not going to go to many places to the point of buying a Northern Kyushu Rail Pass, but are really only going to the suburbs, it's good to buy a 2-day Fukuoka JR Wide Pass to use JR for 2 days to travel to the suburbs. In particular, Kokura is good because you can use Sonic with the Wide Pass. If you see Kokura Castle and use the Kokura Castle Garden, which is finished with construction, you can take pretty pictures. If you have time, I recommend stopping by Mojiko and then going from Mojiko to Kokura. #Fukuoka #HotPlace #Kokura #KokuraCastle #KokuraCastleGarden #Kitakyushu #CityTrip