This research is aimed to clarify the tourism development and history of designation as a National Park of Mt. Aso from documents survey. In the Meiji-era, several foreign nationals climbed Mt. Aso, which is the beginning of leisure activity. They followed the route from Nango-dani, on the other hand most Japanese took the route from Aso dani. From the Taisho-era to the beginning of the Showa-era Tatsuki Matsumura and others played active roles in designation of National Park, which were succeeded in 1924. During the time, Tsuyoshi Tamura visited the sites for three times. His perception of Mt. Aso had changed from admiration of the expansive scale of the natural landscape to the diversity of the cultural landscape. Mt. Aso was different from other mountains,which were discovered as “natural landscapes” at the time on the aspect of that is an active volcano, has less of forest, has grass landscape and historic religious site. Because of these points, Aso have been promoted positive developments in tourism. Though some problems occurred at a same time. Today, the relative point of view to the diverse value is necessary.