Calpis "Mirai" Museum
📍 Gunma, Tatebayashi
A free factory tour at Asahi's Gunma plant tracing Calpis from its 1919 invention to the fermentation tanks making it today, with a tasting at the end.
Inside Asahi Beverages’ Gunma Factory in Tatebayashi is a small, free museum built around a single product: Calpis, the milky, lightly fermented soft drink invented in Japan in 1919. The “Mirai” (“future”) Museum walks visitors through that history and the modern production line before ending, appropriately, with a taste of what was just made.
Why It’s Interesting
It’s a rare case of a company giving an entire museum to one drink — from the 1919 origin story and the evolution of the trademark polka-dot bottle and calf mascot, through to the working fermentation tanks that still make Calpis today. The tour is aimed at families and kids but doesn’t feel like a sales pitch; it’s closer to a company being genuinely proud of its own history.
Best Time to Visit
Open year-round aside from year-end/New Year and other designated closures — there’s no seasonal reason to time a visit, so plan around when you can get a reservation.
Getting There
The factory is in Tatebayashi, in eastern Gunma near the Ibaraki border, about a 15-minute walk from Watase Station on the Tobu Sano Line, or a short taxi ride from Tatebayashi Station. Tours are reservation-only and fill up — book through the official site as soon as the next month’s slots open. It’s roughly a 20–25 minute drive from the Yakult Ibaraki Factory, another free tour in the same general area, making the two easy to combine in one day.
🐿️ Cinnamon was here
Field report
A traveler named Akiya Quest wrote to me about two tours near each other outside Tokyo, and a squirrel does not turn down an itinerary with a tasting at the end.
I stowed away in a tour group's bag past the fermentation tanks, where the whole building smelled faintly sour-sweet in a way I couldn't stop sniffing at. The exhibits walk through Calpis's invention back in 1919 and the calf-and-stripes mascot's whole design history, which is more backstory than I expected from a drink. At the end everyone gets a little cup of the real thing, and I will admit I drank mine faster than a squirrel with actual manners.
Visitors online say the same two things every time: it's genuinely a fun family morning, and the booking window fills up fast once next month's slots go live — reserve the moment they open rather than waiting.
— Cinnamon 🐿️
📸 Cinnamon's camera roll
Snapshots from our very good boy on the road.
Where it is
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