National Resort Onsen(hot Spring) Area are designated by the Minister of the Environment based on the Hot Springs Act as healthy recreation hot spring areas where the effects of hot spring use are expected to be sufficient. There are 79 designated hot spring areas throughout the country. (As of October 2022) The selection of national hot spring resorts is generally based on the following criteria. Part 1 Conditions regarding hot spring quality and gushing amount Part 2 Conditions regarding the environment etc. of hot spring resorts