
Photograph: The keep of Inuyama Castle by Hyppolyte de Saint-Rambert, CC BY 4.0, via Wikimedia Commons.
Inuyama is a small city on the northwestern edge of Aichi Prefecture, where the Kiso River separates Aichi from Gifu, and its castle keep is one of the few in Japan that has stood since before the modern era. The encyclopaedia entry for Inuyama Castle counts it as one of only 12 pre-modern tenshu, or main keeps, still in existence, and it is one of five of those designated a National Treasure. Below the castle there is a historic castle town, on the river there is cormorant fishing, in a garden near the castle there is a seventeenth century teahouse that is also a National Treasure, and out in the hills there is Meiji-mura, an open-air museum of relocated buildings. Together they make a full day trip or an easy overnight from Nagoya.
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The photograph above shows the upper storeys of the castle keep: white plaster walls and dark wooden boards, layered curved tile roofs, and an open viewing balcony with a few people on it, seen through and above green trees against a pale sky. It shows the keep and nothing around it. The Kiso River below the hill is not in the frame, and neither are the castle-town streets, the cormorant fishing boats, the Urakuen garden and its Jo-an teahouse, or Meiji-mura. This post describes all of them, and a reader should not take a single keep for a picture of the whole town.
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Where Inuyama Sits, and Why It Pairs With Nagoya
Most visitors arrive from Nagoya, and the Nagoya packing list is the natural companion to this one. That post already names Inuyama among its day trips for exactly this castle. The private railway Meitetsu runs its Inuyama Line from Meitetsu Nagoya station through Inuyama station and on towards Gifu, so the trip needs no change of operator.
The river shapes the town. The Kiso runs from the mountains of Nagano to Ise Bay near Nagoya, and the castle sits on a hill directly above it at the point where it marks the prefectural border. Parts of the river here, with their rapids and rock formations upstream of the castle, are known as the Japan Rhine, and the stretch of the Kiso in and around Inuyama was designated a National Place of Scenic Beauty in 1934. If you can, stay a night near the river and see the town after the day trippers have gone home.
Inuyama Castle
The keep is small, and that is part of its appeal. The castle is a hirayama, a hill-and-plain castle, built on a rise above the river rather than on a mountain or a flat plain. Its main tower is modest in size, but its form is complex, so it shows a different silhouette depending on the angle you see it from, which is why it rewards a walk around the hill before you climb it.
The question of age is where the castle's reputation comes from, and it is worth reading carefully. The encyclopaedia entry says the Inuyama keep has been determined to be one of the oldest remaining tenshu, and notes that Maruoka Castle makes the same claim. Tree-ring dating of the construction timbers places the structure in the 1580s, with building and renovation continuing through 1620. The current form was largely the work of Oda Nobukatsu, a son of Oda Nobunaga, the warlord who recaptured this castle in 1564 in his campaign to take the province.
The balcony in the photograph is the thing to do here. According to the same entry, Inuyama is the only one of the five National Treasure keeps where visitors can walk all the way around the top-floor balcony, 360 degrees. From up there you look straight down on the Kiso, across into Gifu, and back over the town. It is open to the wind, so hold on to phones and hats.
The castle survived more than the age of warlords. In 1871 the new Meiji government seized it and destroyed every building except the keep. After the keep was damaged in the Great Nobi earthquake, it was returned in 1895 to the Naruse family, who had held it under the shoguns, on condition that they repair and maintain it, and the encyclopaedia describes the castle as unique in Japan in having been privately owned. In 2004 ownership passed to a non-profit foundation. The keep was dismantled and restored between 1961 and 1965, and the castle grounds have been a National Historic Site since 2018. The keep itself was designated a National Treasure in 1935, and again in 1952 under the postwar system.
Expect stairs rather than a lift, and be ready to take your shoes off if asked, so wear shoes that slip on and off easily.
The Castle Town and the Festival
The old castle town lies below the keep, and it is where you will do much of your walking. It is not in the photograph. Give it unhurried time, and look out for Inuyama ware, the local pottery made in the town.
The town's great event is the Inuyama Festival, which UNESCO proclaimed part of the intangible cultural heritage of humanity in 2016, and whose floats carry karakuri, the traditional mechanical puppets, past the castle. Festival dates are set locally and are not printed here; if you want to be there, check the city's own calendar for your year and book a room well ahead, because a small town fills quickly on a festival weekend.
Cormorant Fishing on the Kiso
Ukai, cormorant fishing, is the other reason people come to Inuyama. It is an old way of catching ayu, the sweetfish, using trained Japanese cormorants. The fisherman ties a loose snare near the base of each bird's throat, which lets it swallow small fish but not large ones, and he brings the bird back to the boat to give up its catch. It takes place in 13 cities in Japan, and Inuyama on the Kiso is one of them. The best known is Gifu, on the Nagara River, which this library does not cover yet.
Be clear about what you are watching. The city's own encyclopaedia entry says that cormorant fishing on the Kiso is now almost exclusively done for tourists, so it is a living tradition kept going as a performance rather than a working fishery. It is watched from boats on the river, and the operator sets the season and the times each year, so check them before you plan around it.
Being on the water changes what to wear. A boat on a river is cooler and damper than the street, and spray can reach the sides. Bring a layer, and wear shoes with grip for stepping in and out of a boat.
Urakuen and the Jo-an Teahouse
Urakuen is a tea garden close to the castle, and it holds a very small building with a very large reputation. Jo-an is a teahouse built around 1618 at Kennin-ji in Kyoto for Oda Urakusai, a younger brother of Oda Nobunaga and a student of the tea master Sen no Rikyu. It was moved a number of times, has stood in Urakuen in Inuyama since 1972, and was designated a National Treasure in 1951. The encyclopaedia entry says it is held to be one of the three finest teahouses in Japan.
What makes it remarkable is how little of it there is. The tea room is two and a half tatami mats plus a three-quarter mat, under a shingle roof, and it is entered through a nijiriguchi, a low crawling-in entrance that makes every guest bow to come in. None of the garden or the teahouse is in the photograph above. Whether you can step inside, and on which days, is for the garden to say, so check before you go.
Meiji-mura
Meiji-mura is a large open-air museum of architecture in the hills of Inuyama beside Lake Iruka, and it needs most of a day. It opened on 18 March 1965 and preserves buildings from the Meiji, Taisho and early Showa periods, the decades when Japan began to adopt Western building styles. More than 60 historic buildings have been moved there and rebuilt across about a square kilometre of rolling hills, and eleven are designated Important Cultural Properties.
The building the encyclopaedia calls the most noteworthy is the reconstructed entrance and lobby of Frank Lloyd Wright's Imperial Hotel, which stood in Tokyo from 1923 until 1967. Around it are a Kyoto cathedral of 1890 that can be hired for weddings, the summer house of the writer Lafcadio Hearn, buildings brought from Hawaii, Seattle and Brazil, and a working historic post office. A steam train, an old Kyoto streetcar and shuttle buses run within the grounds. The encyclopaedia records around 1,000 cherry trees blooming in the village in spring.
The practical point is the walking. A square kilometre of hills is a lot of up and down, and some interiors may mean taking shoes off and on. Wear your most comfortable walking shoes, carry water and a layer, and use the internal transport for the long climbs. Meiji-mura is not in the photograph either.
Recommended Tours and Experiences
When to Go
Inuyama has hot, humid summers and relatively mild winters. The city's climate record gives an average annual temperature of 15.1 degrees, average rainfall of 1,910 millimetres with September the wettest month, an August average of around 27.6 degrees and a January average of around 3.4 degrees.
The FCDO notes that Japanese summers are extremely hot and humid, with temperatures often exceeding 35 degrees in July and August, and that heat stroke and heat-related illness are a significant risk in the summer months. Almost everything here is outdoors and on foot, so start early, take shade and drink often.
The FCDO gives the typhoon season as June to December, peaking from July to September, and notes that heavy rainfall is common in the rainy season and typhoon season, with flooding, landslides and transport disruption. Spring and autumn are the comfortable seasons. Check the Japan Meteorological Agency forecast close to your dates rather than packing from a season name.
Is Inuyama Safe for Women Travelers
As of its pages updated 28 August 2026, the FCDO's advice for Japan names no area it advises against travelling to. The one restricted zone it describes is around the Fukushima Daiichi nuclear power plant, which only authorised persons can enter. Its guidance concentrates on natural hazards rather than crime: earthquakes, a typhoon season it gives as June to December, peaking between July and September, and volcanic activity. Neither the landing page nor the safety and security page names Aichi, Nagoya or Inuyama. A small castle town is a straightforward place to travel alone, and the realistic risks are the ones that apply across the country.
The FCDO says female passengers on commuter trains have experienced inappropriate behaviour, including touching and upskirting, and that police advise shouting at the perpetrator to attract attention and asking a fellow passenger to call train or station staff. The Meitetsu trains between Nagoya and Inuyama also carry commuters, so this applies on the way here. The FCDO also reports increased drink spiking and credit card fraud, with the risk higher in nightlife districts, so buy your own drinks and keep them in sight if you spend the evening in Nagoya.
Two legal points matter more in Japan than visitors expect. You must carry your passport or Japanese residence card at all times, and you can be detained without charge for up to 23 days, even for minor offences. The FCDO notes that rape and sexual assault are rare but can happen, and that Japanese law puts a high burden of proof on victims, which is a reason to report anything promptly and to contact your embassy for support.
Japan is in a major earthquake zone. Read the evacuation information where you are staying, and on a boat or a castle balcony, follow the staff's instructions without waiting.
The Inuyama Packing List
Pack for a lot of walking, for shoes that come off and on, for humid heat in summer, and for rain at any time of year.
A merino wool base layer is the foundation in every season. In summer it is about comfort and odour across hot days on foot; in the cool months and on the river in the evening it is warmth that still works when the air is damp.
Walking shoes with real support for the castle hill and the hills of Meiji-mura, and merino socks. The socks matter more than usual here, because in a castle keep, a teahouse garden or an old house you may be walking in them.
A packable rain jacket earns its place in every month, and most of all in September.
A fleece mid layer for the cool months and for evenings on the river.
A wide brim sun hat for summer, because the castle balcony and the Meiji-mura hills are open to the sun and the FCDO's heat warning applies here as much as anywhere. Sunscreen is advised and is not linked, because our affiliate register carries no sunscreen entry at all. The same is true of sunglasses: there is no eyewear entry.
Packing cubes help if you stay a night between Nagoya and Inuyama: one cube for the overnight things, and the main case can stay in a station locker or at your Nagoya hotel. That is six product links plus the base layer, and the list stops there deliberately.
Essential Resources for Women in Inuyama
Emergency numbers: 110 for police, 119 for ambulance and fire.
Main hospital: for anything serious, the large hospitals are in Nagoya; the Nagoya packing list names Nagoya University Hospital and Nagoya City University Hospital, both with emergency departments. For anything minor, ask your accommodation to recommend a local clinic, and carry your hotel address written in Japanese.
Official health authority: the Japanese Ministry of Health, Labour and Welfare, covers national health guidance, which is the right level for a town of this size.
US Embassy: the United States Embassy in Tokyo.
Official tourism authority: the Japan National Tourism Organization, covers the national picture. For festival dates and the cormorant fishing season, check Inuyama's own city and tourism pages for your year.
US State Department travel advisory: the Japan advisory. Read the current level there directly rather than relying on a figure printed in any guide.
UK FCDO travel advice: gov.uk/foreign-travel-advice/japan, and read the safety and security page rather than only the landing page, because that is where the substance sits.
Solo women safety assessment: Inuyama is an easy and calm place to travel alone. The FCDO advises against travel to no area of Japan and names nothing in Aichi, the town is reached by a single direct railway from Nagoya, and the sights are close together. The things that deserve attention are the national ones: unwanted behaviour on crowded commuter trains on the way here, drink spiking in nightlife areas, carrying your passport at all times, heat in summer, and knowing what to do in an earthquake.
Reading On
The Nagoya packing list covers the city most visitors base themselves in. For the other National Treasure keeps, the Matsumoto packing list, the Himeji packing list and the Matsue packing list each cover one of them. North into the mountains, the Takayama packing list and the Shirakawa-go packing list cover old towns of a different kind, and the Kyoto packing list covers the city where Jo-an was first built. The Japan travel guide for women is the hub, and the travel packing guide covers the system this list is built on.
If the outer journey is calling you, the inner one usually is too. Explore SoulMap at romantrail.com/blogs/soulmap.
For why hot humid days, cool damp evenings and long walking days argue for merino rather than cotton, see our guide to the best merino wool base layers for women, and the full range is in the Roman Trail collection.