Het Suwameer in centraal Nagano op 759 m is het grootste meer van de prefectuur. Beroemd om «Omiwatari» — ijsruggen die in diepe winter uit het oppervlak rijzen — en zomervuurwerk. Inspiratie voor het meer in de film «Your Name».
Kenmerken
Omiwatari — when the lake fully freezes in extreme winters and ice ridges rise from cracks; recorded as a Suwa Taisha shrine ritual for some 700 years
Lake Suwa Fireworks Festival (August 15) — one of Japan's largest at 40,000 shells, with magnificent reflections on the water
Tateishi Park — a 934 m vantage; «Your Name» pilgrimage spot and treasure trove of nightscapes
Yatsugatake as Backdrop — the Yatsugatake range seen from the east shore, with the ridges glowing at sunset
Geyser Center — the symbol of Kami-Suwa Onsen; geyser and lake compositions, plus a hot-spring promenade along the lake