I Love ゆ
湯 (ゆ/yu) means hot water in Japanese. Bathing in natural hot springs is done throughout the world wherever the geothermal situation has allowed springs to develop. Japan is fortunate to have springs located across the nation and a culture of bathing has grown up around them from the beginning of history.
In Japan bathing is a national pastime and an attraction for tourists from around the world. Bathers have a choice from remote springs in the mountains to grand hotels. This site focuses primarily on the area around Osaka. Information on local sento (銭湯) bathhouses, the larger more commercial supersento (スーパー銭湯), and other less classifiable hot springs. Some of these locations just use the municipal water, some augment their water with radon gas or water softeners (軟水), lastly some have wells or springs that fill tubs with groundwater.
I began going to hot springs while at university in the United States and found it the best therapy for my upper back pain. Since moving to Japan I have also found bathing as a great stress reliever and a great way to explore the country. Prior to having a child I would go out for a bath 2~3 times a week. Now it more of a once a week if that.
As of January 17th, 2016 there are 332 locations reviewed on this site. There's a giant map too.