murmurKomoro Castle Ruins Kaikoen Autumn Leaves Festival
Komoro City · Kaikoen (Komoro Castle Ruins)
Dates and details can change. Always check the official website before you go.
Komoro Tourism Bureau · Last checked: Oct 11, 2026
Dates
Dates confirmed with official sources
- 2026
- Oct 24 – Nov 23, 2026
- 2027
- Dates have not been announced yet. Please check the official website.
- Usual timing
- Usually late October
- How the date is set
- Changes from year to year
- Venue
- Kaikoen (Komoro Castle Ruins)
- City
- Komoro City, Nagano
About
Kaikoen, the park on the ruins of Komoro Castle, holds a festival while its trees are at their most colorful. The park sits on a plateau at 659 m, and its zelkova and maples turn red and gold, usually looking best from late October to mid-November. A "three-color maple," with single leaves showing red, green and yellow together, once caused a stir here. Komoro Castle is one of Japan's 100 Fine Castles, and its stone walls, some 400 years old, make a handsome backdrop for the foliage. From the Ninomaru site you can see Mount Asama, from the Mizunote gate site you look down on the Chikuma River, and from the observation deck Mount Fuji appears in the distance. Parking at Kaikoen fills up during the festival, so visitors are pointed to other lots nearby.
Sources
- OfficialKomoro Tourism Bureau www.komoro-tour.jp
Last checked: Oct 11, 2026. Event information is based on official announcements, but changes may not always be reflected here. Please check each official website for accurate details.
Other events this month
On the day, see what locals are murmuring on the murmur map
murmur is an app that shows short, anonymous posts on a map, right where they were written. On festival day, open the map around the venue and see what people nearby are saying.