
Bathing here is a once-in-a-lifetime opportunity you don’t want to miss.
Back in 1987, June 26 was officially registered as “Rotenburo Day” (“Open-air Bath Day“) in Japan, due to a play on the syllables “ro” (which sounds like “roku” or “six”), “ten” (which is the word for a decimal point used between numbers), “bu” (which is an alternate reading of “fu”, or “two”), and “ro” (“six”)”.
In honour of this special occasion, our reporter Seiji Nakazawa has been searching high and low for the best rotenburo to introduce to our readers, and after hours of online research and lengthy discussions with friends and work contacts, the most popular recommendations all pointed to a hot spring in Shizuoka Prefecture with a glorious view of Mt Fuji.
▼ So Seiji packed a rucksack and headed out there.
The onsen hot spring is easy to get to on a day trip from Tokyo, by simply hopping on a train to Kanagawa Station and from there, taking the JR Gotemba Line to Ashigara Station in Shizuoka. The journey is incredibly relaxing, taking you out of the urban jungle and into rural fields and mountains, so that when you hop out at the station, you already feel as if time has slowed down.
Ashigara Station is unstaffed and in a quiet location, and from here it gets even quieter, as you need to follow a mountain path to get to the onsen, which is called Choumin Ikoi no Ie Ashigara Onsen (“Townspeople Relaxation House Ashigara Onsen“).
▼ Although the hot spring is generally known as “Ashigara Onsen”, the official name lets people know that this is a town-run onsen.
Just because it’s run by the town doesn’t mean it’s a cheap place in need of repair — in fact, it’s the complete opposite, because the building is clean, modern and sturdy, made of reinforced concrete. This is a town that clearly takes good care of its residents by providing them with such a fantastic-looking facility, and the modern vibe and relaxed atmosphere continues once you step through the doors.
This is where you’ll find a thoroughly modern ticket machine, where visitors pay the bathing fee (600 yen [US$3.76] for adults), and purchase any necessary extras, like razors, towels, cleansing sets and sauna hats. Bathing fees are cheaper for nearby residents, people who are members of the Shizuoka Prefecture Municipal Mutual Aid Association, and students from Koyama High School, which is right in front of the building.
The bathing fee gets you three hours in the building, which is great value for 600 yen.
That value turned out to be even better once Seiji actually set foot inside the bathing area. There was one large bath, and the sauna room was big enough to accommodate about 12 people. One entire wall of the onsen was made of glass, giving you a stunning view of Mt Fuji, and stepping out to the open-air rotenburo made Seiji gasp in delight, because the view of the mountain was absolutely breathtaking.
▼ Seiji wasn’t allowed to take photos from the rotenburo, but he says the view looked just like this photo he snapped from outside.
It’s common for sento (local public baths) around the country to have a painted mural of Mt Fuji on one wall, so to see the real thing while soaking in hot water was like a dream come true for Seiji. Making the view even more impressive is the fact that you can see the entire breadth of the mountain, right down to its base, and Seiji says it was nothing short of spellbinding.
In fact, he says this might be the first time he’s ever seen the shape of the mountain so beautifully, from end to end, and it’s a memory that will stay with him a lifetime.
▼ Seiji, recording his feelings of awe at the hot spring location that will forever be etched in his brain.
Mt Fuji can be viewed from a lot of places, but seeing it from this distance, and with absolutely nothing obscuring the view, will make you really appreciate the true beauty of the mountain.
▼ It even looks great from the carpark.
Seiji says this is a once-in-a-lifetime experience that locals and visitors to Japan ought to treat themselves to at some point in their lives. So next time you’re looking for a jaw-dropping view of Mt Fuji, give the overcrowded Lawson a miss and head over here instead. Anyone can say they’ve taken a photo of themselves outside the Mt Fuji Lawson, but how many people can say they’ve bathed naked in front of the mountain? That’s the real Japanese experience everyone should be aiming for!
Hot spring information
Choumin Ikoi no Ie Ashigara Onsen / 町民いこいの家 あしがら温泉
Address: Shizuoka-ken, Sunto-gun, Oyama-cho, Takenoshita 456-1
静岡県駿東郡小山町竹之下456-1
Hours: 10:00 a.m.-9:00 p.m. (last entry 8:00 p.m.)
Closed Tuesdays (Open if Tuesday is a holiday, and then closed the next day)
Website
Photos ©SoraNews24
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
[ Read in Japanese ]








Tokyo day-trip hot springs: Beautiful Mt. Fuji-view bath is just one highway bus stop from Shibuya
Got tattoos, but still want to experience a Japanese hot spring? It’s no problem here!
The top five best multiple-hot-spring hotels in all of Japan
Photos of “everyday life” in the town next to Mt. Fuji look like a beautiful fantasy world
Japan’s second-most-beautiful day-use hot spring might be underrated【Photos】
Japanese sweets shop sells an ohagi so exquisite it sells out by noon
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
Forget Tokyo go-karts – there’s a new way to sightsee on four wheels in Japan
Starbucks Japan releases new limited-edition summer drinks…and a pastry for dunking
Gama Land, the weird Japanese amusement park celebrating toads, is now like a ghost town
Studio Ghibli adds new My Neighbour Totoro music box to its anime merchandise store in Japan
Japanese bento shop touches hearts by selling super cheap boxed lunches for around a dollar
Lawson Japan releases a crazy new product to remind us it’s not just famous for convenience store food
Lawson upsizes convenience store food for a limited time with two must-try Japanese meals
7-Eleven Japan debuts new black-and-white rice ball packaging…but is it because of a naphtha shortage?
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
Universal Studios Japan is giving Frieren anime fans the chance to make unforgettable memories.
East Japan Railway announces plans to abolish magnetic-strip tickets
Tokyo’s life-size Gundam is getting a new look before its end-of-summer removal
Japan’s cheap beef bowl chain goes upscale with Matsuya Premium, but is it worth the higher price?
7-Eleven Japan joins the craze for Korean Gamja Cheese Balls
7-Eleven Japan has a new Creamy Iced Cafe Latte that’s a hit on social media
Uniqlo reveals third round of massive 100-year-anniversary manga T-shirts for Jump’s Shueisha
Even at twice regular Daiso price, this handy item is still great for summer travel in Japan
New official Ghibli anime food cookbook will teach you how to make Ponyo’s ramen and more
Japanese convenience store Lawson launches new “mini supermarket” chain, L Minimart
Japan’s real-world Pokémon hot spring’s first photos are here![Photos]
Kanji ice cream becomes a sell-out hit in Japan
Kyoto public junior high school becomes first in Japan with a hoodie school uniform
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Secret unstaffed hot spring in Japan will make you feel like you’ve been spirited away
Does this Dormy Inn near Mt. Fuji offer the best business hotel breakfast in all of Japan?
Mt. Fuji hot spring inn gets even more beautiful after dark with Firefly Festival
Five amazing snow-view open-air Japanese hot springs in Hokkaido [Photos]
Secret tent onsen in the forest is one of the most unusual hot springs in Japan
Angry Japanese mayor wants off-season Mt. Fuji hikers to pay costs of their rescue operations
Cost to climb Mt. Fuji doubles, some hikers may have to pass test before getting on trail
Thirty-Six [ ________ ] of Mt. Fuji Project has a view of conserving the iconic mountain
7 great places to see Mt. Fuji from without having to climb it
2018 Top 20 Day Trip Onsen Hot Spring and Spa Ranking in Japan
Two Americans decide to hike Mt. Fuji before trails open, both need rescues on back-to-back days
Love hot springs and tattoos? You won’t want to miss this onsen paradise near Tokyo!
Three dead bodies found near summit of Mt. Fuji
Fourth dead body found on Mt. Fuji in less than one week from climbing season start
New hot spring found in Tokyo as 80-year-old bathhouse makes a happy discovery
18 awesome overnight hot spring trips from Tokyo, and a quiz to help pick the best one for you