Korankei Gorge, located in the Asuke area of Toyota City, Aichi Prefecture, is a scenic valley along the Tomoe River and one of Japan’s most renowned autumn foliage destinations. Approximately 3,000 maple trees cover the surrounding mountains in shades of red and yellow. The view of the colorful leaves surrounding Taigetsukyo Bridge over the river is a distinctive highlight of the area. Walking along the riverside paths or visiting Kojakuji Temple on Mount Iimori offers a closer look at Japan’s natural scenery and cultural heritage.
The historic streets of Asuke, where traditional buildings remain, are also within walking distance. They offer a different perspective on Japanese townscapes beyond the valley. For travelers staying in Nagoya, Korankei is an opportunity to experience the rural mountain landscapes of Japan, away from the city’s urban attractions.
Korankei Access Guide for First-time Visitors
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- Location: Asukecho, Toyota, Aichi
- Closed Days: None
- Hours: Open 24 hours
- Admission: Free (Sanshu Asuke Yashiki and parking require separate fees)
Seasonal Highlights at

Autumn foliage at Korankei typically reaches its peak from mid to late November. The Korankei Maple Festival takes place in November, with Mount Iimori illuminated from sunset until 9:00 PM. During the day, the colorful maple leaves and views of the Tomoe River are the main attractions, while the illuminated mountainside offers a different scene after dark. Roads become congested during peak foliage season, so using public transportation and allowing extra travel time are important considerations.
From mid to late March, pale purple katakuri flowers (dogtooth violets) bloom on the slopes of Mount Iimori. The flowers tend to open on warm, sunny days, making afternoon walks a suitable choice. From early to mid-April, fresh leaves begin to emerge, covering the valley in spring greenery. Spring is also an option for travelers who prefer nature walks without the autumn crowds.
Korankei Travel Q&A

- When is the best time to see the autumn leaves?
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The peak season is mid to late November. At night, illuminations are held along the river.
- How much time should I plan to spend?
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Half a day is enough for walking and dining, though photography or event participation may take longer.
- Where are the best photo spots?
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Taigetsukyo Bridge and the maple tunnel at Kojakuji Temple are especially popular.
- What local specialty food should I try?
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Gohei-mochi, skewered rice cakes with savory miso sauce, is a local favorite sold at stalls along the paths.
Korankei Gorge Walks, Asuke Town and Where to Stay

The area around Korankei includes Sanshu Asuke Yashiki, which introduces traditional Japanese lifestyles and culture, and the historic streets of Asuke, where old merchant houses remain. Both can be explored on foot alongside the gorge. Restaurants and souvenir shops provide places to take a break during a walk. For overnight stays, accommodations in the Asuke area are an option, as are hotels near Toyotashi Station, which offers convenient rail connections to other destinations. Choosing where to stay based on the next day’s destination and transportation plans can make travel arrangements easier.
Korankei is accessible from the Nagoya area by combining train and local bus services. The bus ride from Toyotashi Station to Korankei takes approximately 40 minutes. Planning around the return bus schedule and allowing enough time to explore both the gorge and the historic streets of Asuke will help keep the itinerary manageable.

