5,984 springs · 6 countries · expanding

Every warm water
on earth, mapped
and described.(well, we're trying.)

From wild riverside soaks in the Sierras to centenarian onsen in Kyushu — a quiet, careful field guide maintained by the people who visit them.

Open the map →Browse Japan
By country

An atlas spanning continents.

US
United States
610 entries · 366 natural · 244 commercial
JP
Japan日本
3,439 entries · 219 natural · 3220 commercial
CA
Canada
70 entries · 30 natural · 40 commercial
HU
HungaryMagyarország
1,319 entries · 0 natural · 1319 commercial
KR
South Korea대한민국
511 entries · 11 natural · 500 commercial
IS
IcelandÍsland
35 entries · 0 natural · 35 commercial
I · Featured this season

From the onsen of Japan.

See all 3,439 →
Tennen Onsen Naniwanoyu
№ 01 · Osaka · Osaka

Tennen Onsen Naniwanoyu

publicBath · ★ 4.6 (7,586)
Ryusenji no Yu
№ 02

Ryusenji no Yu

publicBath · ★ 3.7 (6,578)
Maenohara Onsen Sayano Yudokoro
№ 03

Maenohara Onsen Sayano Yudokoro

onsen · ★ 4.5 (6,561)
Hyotan Onsen
№ 04 · Oita · Beppu

Hyotan Onsen

onsen · ★ 4.9 (6,028)
Canal Resort
№ 05 · Aichi · Nagoya

Canal Resort

publicBath · ★ 3.3 (4,838)
Toki
№ 06

Toki

onsen · ★ 3.4 (4,208)
II · By state

An atlas, not a list.

Every spring is geocoded against open data, with drive times calculated from real road networks rather than borrowed from a third-party API. We don't track or log your visits.

Wyoming173California104Idaho66Nevada46Colorado38Utah29Montana27Oregon20Arizona18Washington17
III · Within a two-hour drive

Spring trips, by city.

Mammoth LakesCA20BishopCA20Las VegasNV16OgdenUT16Los AngelesCA15ButteMT14San DiegoCA13BozemanMT13MissoulaMT12Salt Lake CityUT12Carson CityNV12RenoNV11