Fukuoka used to be two cities on two sides of a river. Hakata was the merchant town and port, Fukuoka the castle town of the Kuroda samurai lords. They merged in 1889, and the story goes that a group of samurai crashed the vote to make sure the new city kept the name Fukuoka. The tale is probably apocryphal, but the split is still there: the city is Fukuoka, the main station and the port are Hakata, and the ramen is always Hakata ramen.
It is a city to eat in. After dark more than 100 yatai, open-air food stalls with a counter and a handful of stools, appear on the pavements. The sights are real but modest: a Zen temple, a shrine, castle walls without the castle, a park around a lake. That is why three days is the right length. You can do all of it at a walking pace and still have an evening free for a second bowl.
Day one is old Hakata, Canal City and the Nakasu stalls. Day two is the west side: Ohori Park, the castle ruins, Fukuoka Tower and the Tenjin stalls. Day three is Dazaifu, the shrine of the god of learning, half an hour away by train. Start on a Wednesday: the Ohori garden and the Kyushu National Museum are closed on Mondays, and Dazaifu is calmer on a Friday. Fukuoka is also the usual gateway to southern Japan, for anyone coming by ferry from Korea (see our Busan guide) or by Shinkansen from Hiroshima. More on the country is on the Japan page.