Chikuzen Province

Chikuzen Province (筑前国, Chikuzen no kuni^?) was an old province of Japan in the area that is today part of Fukuoka Prefecture in Kyūshū. It was sometimes called Chikushū (筑州^?) or Chikuyō (筑陽^?), with Chikugo Province. Chikuzen bordered Buzen, Bungo, Chikugo, and Hizen Provinces.

The original provincial capital is believed to be near Dazaifu, although Fukuoka city has become dominant in modern times.

At the end of the 13th century, Chikuzen was the landing point for a Mongol invasion force. But the main force was destroyed by a typhoon (later called kamikaze).

...
Wikipedia