A dojo is a Japanese term which literally means "place of the way". Initially, dojos were adjunct to temples. The term can refer to a formal training place for any of the Japanese do arts but typically it is considered the formal gathering place for students of any Japanese martial arts style to conduct training, examinations and other related encounters.
The concept of a dojo as a martial arts training place is a Western concept; in Japan, any physical training facility, including professional wrestling schools, may be called dojo because of its close martial arts roots.
In the "training grounds" section I will post pictures of any building or location that evokes a feeling of martial arts training. I realize some photos I post won't be of actual dojos but anything that gives me the feeling of ancient training will be game.