Karasawayama Castle Ruins
Open by month
Open in January. No seasonal closure recorded. New Year (Dec 29 – Jan 3): open.
Open in February. No seasonal closure recorded.
Open in March. No seasonal closure recorded.
Open in April — at its best. Cherry blossoms late March to early April, azaleas mid April to early May, autumn leaves mid to late November.
Open in May. No seasonal closure recorded.
Open in June. No seasonal closure recorded.
Open in July. No seasonal closure recorded.
Open in August. No seasonal closure recorded.
Open in September. No seasonal closure recorded.
Open in October. No seasonal closure recorded.
Open in November — at its best. Cherry blossoms late March to early April, azaleas mid April to early May, autumn leaves mid to late November.
Open in December. No seasonal closure recorded. New Year (Dec 29 – Jan 3): open.
Checked against the official site on 2026-10-12.

The ruins of a mountain castle over 400 years old, with earthwork gates, a deep moat cut and a large well that still holds water. The summit looks over the Kanto Plain.
National Historic Site; one of the 'Next 100 Fine Castles of Japan'
Nearby
- Sano Yakuyoke Daishi (Sojuji Temple) ≈ 20 min by car
- Ashikaga Flower Park ≈ 25 min by car
- Mt. Ohira (Ohirasan) ≈ 30 min by car
- Tochigi City Kuranomachi (Storehouse Town) ≈ 35 min by car
- Tsutsujigaoka Park (Tatebayashi) ≈ 35 min by car
Travel times are rough estimates by car.
- Best time
- April, November — Cherry blossoms late March to early April, azaleas mid April to early May, autumn leaves mid to late November
- Getting there
- About 10 min by taxi from Tanuma Sta. (Tobu Sano Line), or about 70 min on foot
Easier with a tour or car - Fee
- Free
- Time needed
- 1 h 30 min
Checked against the official Japanese website on 2026-10-12. Report outdated info