Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Izu-Yugawara Onsen is a hot spring resort in the coastal resort area between Izu and Yugawara on the southeastern Izu Peninsula and the Kanagawa coast, whose combined saline, carbonated, and simple mineral waters produce a distinctive bathing experience prized by visitors drawn to this scenic stretch of coastline between Atami and Odawara. The area benefits from both the thermal heritage of the Izu Peninsula and the long resort tradition of Yugawara, which has attracted Japanese artists, writers, and intellectuals since the Meiji period, including the novelist Yasunari Kawabata who drew inspiration for his Nobel Prize-winning work while staying in the region. The carbonated mineral component of the waters gives bathers a pleasantly effervescent sensation, while the saline content nourishes the skin and supports circulation, making this a particularly versatile therapeutic bathing destination.
Insider tip — Izu-Yugawara Onsen straddles the border of Kanagawa and Shizuoka on the Izu Peninsula, famed for its salty-carbonated sodium-chloride spring that tingles pleasantly on the skin. Literary giants including Kawabata Yasunari wrote masterpieces here in the early 20th century, and the town preserves a nostalgic Taisho-era streetscape of traditional inns. The Manazuru Peninsula coastline is just minutes away for post-bath seaside walks. Visit in cherry-blossom season when the riverside promenade is lined with sakura in full bloom.