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Hokuriku & Koshinetsu · Onsen area
Seki Onsen
せきおんせん · 関温泉
Niigata · 妙高市
OpenNational Health Resort Onsen
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Official classification
Spring type (therapeutic classes)
Official spring-type name (as recorded)ナトリウム - 塩化物・炭酸水素塩泉
- Source temperature
- 48.8°C
- pH
- Unconfirmed
- Flow rate
- Unconfirmed
- Radon
- Unconfirmed
Appearance & feel
Water colour · Feel
Unconfirmed
Colour and feel are listed only where a source states them. They vary by day and by bath.
This area has basic information only. In-depth articles are being added.
Facilities in this area
Facilities come from the register (Wikipedia, OpenStreetMap, official sites). Those marked "natural spring unconfirmed" are listed on the basis of their name only.
No facility information yet.
Getting there
Reachable by public transport
ETR妙高はねうまライン関山駅よりバスで約25分
- Checked
- no check date
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Visitor reviews
No reviews yet. While the review platform is being prepared, we do not display fictional reviews or ratings.
Review posting is in preparation, with visit date, facility, comments on water, scenery and access, photos, language and reporting.
Onsen areas nearby
Photo information
Photo information
Photo information
Suginosawa Onsen
Matsugamine Onsen
Matsugamine Onsen
6.5 km
Kurohime Onsen
Kurohime Onsen
9 km
Register sources
- 関温泉 - Wikipedia(日本語版)Wikipedia · CC BY-SA 4.0 · 2026-10-09
- Wikidata Q11656127Wikidata · CC0 · 2026-10-09
Data status
Name & locationPublishedCoordinatesPublishedSpring typePublishedPhotosPublishedFacilitiesIn preparationVisiting info (dated)In preparationEditorial articleIn preparation
Updated 2026-10-09
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