Former Maruichi Honma Merchant House (Mashike)
Open by month
Closed in January. Open late April to 3 November only. New Year (Dec 29 – Jan 3): closed.
Closed in February. Open late April to 3 November only.
Closed in March. Open late April to 3 November only.
Partly closed in April: Open late April to 3 November only.
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.
Partly closed in November: Open late April to 3 November only.
Closed in December. Open late April to 3 November only. New Year (Dec 29 – Jan 3): closed.
Checked against the official site on 2026-10-12.

A large merchant's house and shop completed in 1902 in the old herring port of Mashike; the restored rooms and storehouses are open inside.
Important Cultural Property
Nearby
- Former Hanada Family Herring House (Obira) ≈ 1 h 15 min by car
Travel times are rough estimates by car.
- Closed or limited
- Open late April to 3 November only
- Getting there
- About 30 min by car from Rumoi (Route 231); about 1 hr 55 min from Sapporo by expressway
Easier with a tour or car - Fee
- ¥400 (high school ¥300, children ¥200)
- Good to know
- Open 25 Apr – 3 Nov 2026, 10:00–17:00; closed Thursdays except Jul–Aug
- Time needed
- 45 min
Checked against the official Japanese website on 2026-10-12. Report outdated info