I went to a spontaneous trip to Fukuoka Japan with my friend! We did A LOT considering the short weekend stay. Hope this inspires you to visit Fukuoka Japan!!
PLACES WE VISITED
Itoshima isaland https://www.japan.travel/en/spot/778/
Nakasu Street food https://www.tripadvisor.com/Restaurants-g14135118-c10686-Nakasu_Hakata_Fukuoka_Fukuoka_Prefecture_Kyushu.html
Kego shrine https://yokanavi.com/en/spot/26907/
Ganso hakata mentaijyu https://www.tripadvisor.com/Restaurant_Review-g14127491-d4608460-Reviews-Ganso_Hakata_Mentaiju-Chuo_Fukuoka_Fukuoka_Prefecture_Kyushu.html
Fukuoka castle ruins https://www.japan-guide.com/e/e4806.html
For Itoshima Island we followed this travel plan *this is in Japanese
https://xn--54q87zl1zrwk.com/osusume02.html