Kusatsu Onsen

Kusatsu Onsen is one of Japan's most famous and popular hot spring resorts, located in the mountains of Gunma Prefecture about 200 km northwest of Tokyo. It is known for its abundant, high-quality hot spring water that is said to cure every illness but lovesickness.

Key Facts

• It has the largest flowing volume of hot spring water in Japan
• The water is 100% natural, very acidic (pH 2.1), and has strong antibacterial properties
• There are 13 public baths in the town, managed by the townspeople
• Kusatsu has been popular as a hot spring resort for centuries, but its fame grew after German doctor Erwin von Bälz recommended its health benefits in the late 1800s
• The town has a population of only around 7,000 but welcomes over 3 million tourists annually
• Visitors can enjoy unique bathing styles like jikan-yu and yumomi, as well as the picturesque town, nearby mountains, and ski slopes

Kusatsu Onsen consistently ranks as one of the top hot spring destinations in Japan and is known for its authentic Japanese atmosphere and natural beauty in all four seasons.