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Itoigawa, Niigata / 親不知レンガトンネル

Oyashirazu Brick Tunnel

A walk at Oyashirazu, once the hardest pass on the Hokuriku road, along the old national road with views of four generations of roads and through a disused Meiji-era brick tunnel; both are civil-engineering heritage sites.

The arched entrance of an old red-brick tunnel overgrown with plants, with an information board
The old brick tunnel at Oyashirazu (photo taken May 2020)Photo: Saigen Jiro / Wikimedia Commons, CC0 (resized) · Terms of use · Source

Last official check

25 Sept 2026

Traveler reports

0

Reports open in Phase 2

Next scheduled check

24 Dec 2026

Decide before you go

A short summary made from the official facts below. Check the rows for details.

Getting there
Car
Closing days
Closures change with the season
Booking
Some things need booking (see the rows below)

Before you go

Only facts we confirmed on official sources are shown. Anything else is listed under “Not yet confirmed”.

Opening hours

Early April to late November (about 2 hours).

Checked 25 Sept 2026 on a tourism board site
Closed

The western path is closed in winter (December-March).

Checked 25 Sept 2026 on a tourism board site
Admission

Guides are paid (booking required).

Checked 25 Sept 2026 on a tourism board site
Getting there

5 minutes by car from Oyashirazu IC (Hokuriku Expressway).

Checked 25 Sept 2026 on a tourism board site
Parking

Parking available.

Checked 25 Sept 2026 on a tourism board site
Not yet confirmed

Payment, Accessibility

we have not confirmed this on an official source yet. Check with the spot before you go.

Found wrong or outdated information? Let us know

Address: Itoigawa, Niigata (Japanese address: 新潟県糸魚川市)

Official site: https://niigata-kankou.or.jp/spot/14219

Location

Smaller pins are other spots nearby.

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Nearby spots

Distances are straight-line distances, not travel distances.

Crowds

Not yet confirmed

Crowd level, Best time to visit, Peak time, Busiest days, Busiest season

no official source yet, and not enough traveler reports.

Latest traveler report
None yet

Traveler crowd data by time of day appears after 5 traveler reports (0 so far).

You can check typical busy hours in Google Maps ("Popular times" on the place's page). Open this spot in Google Maps

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