Japan 3 most famous hot spring

Japan is well known for it high quality hot spring. However,Kusatsu Onsen, Gero Onsen, and Arima Onsen are the most famous one.

Kusatsu Onsen is located on a high plateau and close to skiing grounds, it is well known for the landscape of steam arising from the Onsens. There are old Onsen towns with a traditional Onsen town image. Gero Onsen is an Onsen town located along the river, which guests may enjoy the scenerey throughout the year along with many festivals as well. Arima Onsen is located at Mount Rokko full of leasure spots and beatiful Autumn tint and water falls.

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  Kusatsu Onsen

  The town of Kusatsu is located at the southeastern foot of Mt. Kusatsu-Shirane-san in the northwestern part of Gunma. The town became well known about 120 years ago after Dr. Balz, a medical doctor from Germany, found its hot spring to be very effective. Kusatsu-onsen Hot Spring consists of eighteen public baths, each with a different effect and separate fountainhead. Most of the hot springs operate twenty-four hours a day.
  
  In the center of the town, two spots are particularly popular all year round: 'Yubatake,' one of the fountainheads, and Netsu-no-yu, where 'yumomi' (stirring hot water with paddle-like wooden boards to cool it down) demonstrations are shown. Tourists have a choice of many places where they can learn about nature and the history of hot springs. The Kusatsu Alpine-Plant Museum and the Kusatsu Hot-Spring Museum are two of the most popular attractions.

  
  

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  Gero Onsen 

  The Gero-onsen Hot Spring in rich nature, located in the center part of Honshu, has been known as a healing hot spring since the 10th century and has welcomed a number of visitors. It is considered one of the three best hot springs in Japan, and is effective for treating rheumatism, impaired motor function, and nervous disease and relieving fatigue. The hot spring is also nicknamed the "Hot Spring for the Beauty," because of the smooth touch of water. Footbaths are spotted in the town, which you can enjoy while strolling, free of charge.

  
  In mid-summer, the Gero-onsen-matsuri Festival is held for three days, where you can enjoy watching the fire festival with five dragons vigorously strolling, a portable shrine carried by women 'geisha,' as well as a samba parade. The 

  festival ends with fireworks.

  
  

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  Arima Onsen 

  Arima is the oldest spa area in Japan and located in Koba city which is very close to Osaka. Arima is about one hour bus ride from Umeda station in Osaka. Arima hot springs are natural ones that have been used since ancient times when people had no skills of digging in the ground. Presently the digging skills are highly-developed, however, they are also providing us with hot water full of natural blessings or active ingredients from near the surface (within 300 meters in depth) in the earth.

  Arima hot springs are rare worldwide ones containing lots of minerals and natural ingredients.  There are 7 ingredients, except sulfur spring and acid spring, out of 9 main ingredients (simple hot spring water, carbon dioxide spring water, hydrogen carbonate spring water, chloride water, sulfate water, ferruginous water, sulfur water, acid water, and radioactive water) designated as ones to be included for medical treatment.