Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Nanakita Onsen is a convenient hot spring located within Sendai city in Miyagi Prefecture, near the Nanakita River valley in the northeastern quadrant of Japan's City of Trees — a city celebrated for its exceptional urban greenery, the Date family's Zuihōden mausoleum, and the vibrant Tanabata festival that transforms the central shopping arcades each August with millions of colorful paper streamers. The siliceous thermal waters provide skin-softening and relaxation benefits, offering accessible urban thermal bathing for Sendai's large and diverse population. The onsen's location within the greater Sendai urban area makes it a practical and comfortable wellness option for both residents and visitors to Tohoku's metropolitan capital.
Insider tip — Nanakita Onsen lies in the Miyagi hills north of Sendai city, drawing on a gentle bicarbonate spring that surfaces at a comfortable 40°C. The facility serves a largely local clientele who appreciate the enveloping warmth of the indoor pools kept at a steady temperature year-round. The surrounding cedar forests lend a quiet, contemplative atmosphere rare this close to a major city. Early evening soaks are especially popular with commuters returning from Sendai.