Northern Kyūshū comprises all of Fukuoka (福岡), Ōita (大分) and Saga (佐賀) Prefectures, plus northern Nagasaki Prefecture (長崎県). For many visitors, it will be the first entry into Japan's southern-most island. Fukuoka is the largest city, yet still retains a lovely 'small town' feel. Beppu, to the east, is renowned for its hot springs, while to the west lie a number of lovely pottery towns and the historical gem of Hirado.
Get even a little bit away from an urban centre and you'll be surrounded by a patchwork of rice fields that can extend for miles. There's excellent hiking in the mountains, a coastline that's relatively untouched, and quiet rural towns and villages to explore.
While tourists have become more common in the past few decades, they are still somewhat of a rarity, so expect a few stares and the occasional question.