Kaikan

Kaikan (会館) means “hall, assembly building”. In a temple it is usually a modern building used for gatherings of the faithful (danshinto kaikan, 檀信徒会館), ceremonies or group meals. It is not a place of worship: you do not pray there as you do at the hondō.

Sometimes the kaikan is also the temple's shukubō, where you can stay the night: this is the case of the Kōmyō kaikan (光明会館) at temple 7 Jūraku-ji. On site, if the sign says 宿坊 (shukubō) or 宿泊 (shukuhaku, “lodging”), you can stay there. See also honbō.