Zoro's Dojo

It is a kenjutsu school, a school of japanese swordsmanship. It is is located in Shimotsuki Village. It first appeared in chapter 5 of the manga and in episode 2 of the anime. Its owner is teacher Koshiro, skilled swordsman and father of the deceased Kuina. It the place where Zoro trained his Santouryu and is the only dojo Zoro did not take down the sign of it.