Photo by Purplepumpkins, via Wikimedia Commons (CC BY-SA 3.0)
🇯🇵 Japan · Fukushima City, Fukushima Prefecture
Photo by Purplepumpkins, via Wikimedia Commons (CC BY-SA 3.0)
🇯🇵 Japan · Fukushima City, Fukushima Prefecture
♨ Temperature
42°C
⛰ Altitude
—
⚗ pH
—
💧 TDS
—
🌊 Flow rate
—
📅 Established
—
✓ Verified on 2026-07-28
Iizaka Onsen is a traditional hot spring town in Fukushima City with a history said to stretch back over 2,000 years, historically grouped with Naruko and Akiu as one of the Oshu San-yu, three renowned hot springs of the Tohoku region. The town features more than 40 ryokan and nine public bathhouses, including Sabakoyu, one of Japan's oldest community bathhouses (rebuilt in 1993). The Edo-period poet Matsuo Bashō is recorded as having visited Sabakoyu in 1689, and spring water temperature is around 42°C.
Iizaka was historically counted among the Oshu San-yu, the three great hot springs of the Tohoku region, alongside Naruko and Akiu Onsen. Local legend attributes early use to Yamato Takeru, and the Edo-period poet Matsuo Bashō documented visiting the Sabakoyu bathhouse in 1689.