You can head to Sea Mall Shimonoseki, Shimonoseki Fish Market or Karato Fish Market to shop for the perfect souvenir. If you're interested in local cultural spots, you can visit Kitakyushu Manga Museum, Riverwalk Kitakyushu and Kitakyushu City Art Museum. Additionally, you might want to add Ganryujima and Moji Port to your itinerary.