What are Onsen? All About These Popular Japanese Bath Houses

Kusatsu Onsen, Gunma, Japan
Kusatsu Onsen, Gunma, Japan. Photo by Nguyen TP Hai on Unsplash

Onsen are a quintessential part of Japanese culture and a must-try experience for any traveler visiting Japan. These traditional bath houses built around geothermally heated springs have been enjoyed by the Japanese people for centuries due to their believed healing properties. Because onsen are built from natural hot springs, their waters contain minerals that can help increase blood circulation and calm certain skin conditions. 

They can be found all throughout Japan, with some of the most famous being in Hokkaido, Gunma, and Oita. Some are run by local municipalities, while others are affiliated with private businesses such as hotels. Each onsen has its own unique charm and beauty, with some being surrounded by lush forests or overlooking snow-capped mountains.

There are special rules and customs that are important to be aware of before entering an onsen. Shoes must be removed before entering the changing rooms, and it’s customary to wash your body thoroughly before entering the bath itself. Tattoos are also generally not allowed, as they are associated with the yakuza, though some facilities have become more lenient regarding tattoos in recent years. If you have tattoos, be sure to check the rules before going to a particular bath house. 

Prices for onsen vary depending on location and the facilities offered, but they typically range from 500 to 2,000 yen, or about $3-15. Some onsens offer overnight stays with meals included, making for a relaxing and rejuvenating experience.