Onagawa Onsen Yupopo - A Tattoo-Friendly Hot Spring in Onagawa, Miyagi

The train line ends at the sea. Onagawa Station is the last stop on the Ishinomaki Line, and the onsen is right there inside the building — same curved white roof, same architect who won the Pritzker Prize. You step off the platform, buy a ticket on the ground floor, climb one flight, and you're soaking with a view out toward Onagawa Bay.

Yupopo is a small-town bathhouse built into one of Japan's most striking pieces of post-disaster architecture. Shigeru Ban designed the station after the 2011 tsunami leveled the original town, and the sweeping roof — shaped like a seagull lifting off — has become the symbol of Onagawa's rebuild. Inside, the bathing is simple: two pools on the second floor, tile murals by artist Senju Hiroshi on the walls, and alkaline spring water that locals call a "beauty bath" for how it leaves your skin.

If you're traveling the Sanriku coast or passing through Ishinomaki, Yupopo is the rare onsen where the building itself is half the experience. Tattooed guests bathe openly here — when asked, staff smile and explain that local fishermen have long had tattoos, so there are no restrictions.

• Train Station Onsen: The bathhouse occupies the ground and second floors of Onagawa Station itself — step off the Ishinomaki Line and into the bath without leaving the building.
• Tattoos Accepted, No Questions: Staff confirm that tattoos are permitted, citing the local fishing community where tattoos are commonplace. No covers, no patches needed.
• Pritzker Prize Architecture: Shigeru Ban designed the station after the 2011 tsunami, with a curved white roof modeled on a seagull in flight — the onsen is part of Onagawa's reconstruction story.
• Alkaline Beauty Water: The spring (pH 8.8) is known locally as a beauty bath — the water leaves skin noticeably smoother after soaking, with a gentle temperature that invites longer sessions.

A tile mural of Mount Fuji fills the wall — Senju Hiroshi's work, bold enough to stop you mid-step as you enter the second-floor bathing area. On the opposite wall, deer gather by water in a quieter composition. The space itself is compact: a round white-water tub and a square onsen tub, room for a handful of bathers at a time. The spring water runs clear and alkaline, with a smoothness you feel more than see — soft on the skin, no strong mineral smell, the kind of water that earns its local reputation as a beauty bath. The temperature sits on the gentle side, warm enough to settle into without overheating. After bathing, the station's upper level looks out toward the bay and the Seapal Pier plaza below, where grilled scallops and seafood stalls pick up where the hot water left off.