Japanese stone lanterns (??? dai-d?r?, lit. platform lamp) date back to the Nara Period and the Heian Period. Originally they were located only at Buddhist temples, where they lined the paths and approaches to the temple, but in the Heian period they began to be used at Shinto shrines as well. According to tradition, during the Momoyama Period they were introduced to the tea garden by the first great tea masters, and in later gardens they were used purely for decoration.