Kaikoen Autumn Foliage Festival & Night Illumination
Runs from mid-October to mid-November, featuring nightly floodlighting on the mossy stone walls and maple canopies.
Built into deep natural volcanic gorges beneath Mount Asama, Komoro Castle is one of Japan’s rare "hole castles" (anajiro), built below the town level. In autumn, the 400-year-old mossy volcanic stone walls, Ote-mon gate, and historic Suwa Shrine are engulfed in rich vermilion and gold maples, ranked among Japan’s Top 100 Cherry and Maple Spots.
- Best time
- All year
- Entry
- Not checked · Check the official site ↗
- Parking
- タイムズ小諸駅前 · 1 min walk · paid · Navigate ↗Nearby parking · 3 min walk · Navigate ↗
- Getting there
- Plan the route from your start ↓ · Open in Google Maps ↗
- Official info
- city.komoro.lg.jp ↗
💡 Reference photograph; views and access can change.
Weather for your date
Today shows live hourly weather. Future dates show the best available report.
22°C
Overcast
💧 0% rain chance · wind 8 km/h
Hourly forecast
21°💧 0%
20°💧 16%
19°💧 40%
17°💧 61%
17°💧 55%
17°💧 45%
17°💧 37%
17°💧 23%
Forecast: Open-Meteo
Directions to Komoro Kaikoen Castle Park Autumn Maple Festival
Leave the start blank to choose your current location in Google Maps. The pin is an approximate landmark; check the entrance and live services in Maps.
When to see this place
Typical viewing windows. Weather and bloom dates vary each year; these are not live forecasts.
Suitability
Stroller: Accessible
Nursing room: Available
Noise level: quiet
Kids: Paved castle pathways; historical zoo and children’s amusement park located inside grounds.
Rules
Fire: no fire
Drones: banned
Nearby places
Within 30 km, closest first.
GunmaOnioshidashi Lava Park
A garden of black lava blocks left by the 1783 eruption of Mount Asama, with walking paths between the rocks and Asama rising behind. A small temple stands among the lava. Entry is paid.
16 km away
NaganoKaruizawa Prince Snow Resort and Ice Skating
A renowned winter sports and ice resort located just 1 hour from Tokyo by Shinkansen. Features outdoor ice skating, gentle family snow slopes with Mount Asama panoramas, and direct access to Karuizawa Prince shopping plaza.
19 km away
NaganoUtsukushigahara Open-Air Museum
Utsukushigahara Open-Air Museum in Nagano, prepared with map position, photo, accessibility notes and a month-based planning window.
28 km away
GunmaMount Myogi
One of Japan’s three celebrated unusual scenic formations, Mount Myogi is defined by serrated rock towers above forests and shrines. In autumn the dark cliffs contrast with red, orange and yellow foliage; nearby Myogi Onsen Momiji no Yu offers a relaxing stop after sightseeing.
29 km away
Sources, photo credits and verification
Place information: Official tourism source