Hokkaido is dotted with numerous hot spring areas, each boasting different water qualities. Among them, a globally rare type of hot spring called "moor onsen" (or moor hot spring) is commonly found in the Tokachi region.

So, what exactly is a moor onsen?
Let's experience its incredible benefits at "Natural Onsen Asahiyu," a beloved local favorite.

Asahiyu has a long history, said to have opened in 1948. At one point, its continued operation was in jeopardy due to the absence of an owner, but it was revived in response to passionate calls from its fans. This story alone shows just how popular this onsen sento (public bathhouse) is.
So, what is the secret to Asahiyu's popularity? Without a doubt, it's the quality of its water. It's a simple alkaline hot spring known as a moor onsen, rich in organic matter from decomposed plants. The water flows directly from the source, completely unaltered—no heating, no added water. The onsen boasts an abundant flow, with water constantly overflowing from the spout on the side of the tub.
When you immerse yourself in the beautiful, amber-colored water characteristic of moor onsen, countless tiny bubbles will cling to your skin. This is said to be proof of the freshness of the hot spring. Another notable feature is the silky, almost slippery feel of the water. It's like a natural skin treatment, and you can truly feel its beautifying effects. The water is so smooth, in fact, that you need to be careful not to slip when getting out of the tub.
The moor onsen, born from the rich nature of Tokachi, is worth experiencing at least once, not just for onsen enthusiasts but for everyone.

Natural Onsen Asahiyu
Location: 14-19 Higashi 3-jo Minami, Obihiro, Hokkaido
Phone: 0155-24-1933