A dojo (道場) is a Japanese term which literally means "place of the Way". Dojo are sometimes added on to temples.
The term can refer to a training place for any of the Japanese arts but it is considered the formal gathering place for students of a martial arts style to train, take exams and fight.
Images for kids
The Ikenobō dōjō (right) next to Rokkaku-dō, Kyoto