Chugoku (which means middle country) is home to the city of Hiroshima and one of the best gardens in Japan - Korakuen in Okayama, a must to see if you are in this region.
It is sparesly populated with lots of unspoilt countryside dotted with small towns that give you a glimpse of the old Japan.
Not sure which area you want to go to? For more information, check out the links below.