This paper shows the process of regulation for buildings in height in national parks and the situation of 13 meters' regulations for buildings in prefectural ordinance for landscape in Japan. In national parks 13 meters' regulation was introduced as the criterion for buildings' registrations in ordinary zones at first by Natural Parks Law promulgated in 1957. After that this criterion was used as a criterion of large scale apartment buildings etc. which were checked by the national park government authority before a prefecture gave the permission. And now the criterion is strengthened to a strict regulation, which means that buildings more than 13 meters are not approved usually in special zones in Natural Parks Law through after Guideline to Asses on Various Activities in National Parks Area. At present 40 prefectures have ordinances for landscape. And 29 prefectures have regulations for buildings in height and 19 prefectures use 13 meters height as a large scale building etc. criterion. But prefectural ordinances for landscape have the tendency to be separated to two groups. One is with numerical regulations and the other is without numerical regulations.
