Hatake Onsen

A hot-spring town on the central Izu plain, joining the ancient Kona spring — named in the Azuma Kagami and tied to the Hōjō clan — with Meiji-era Nagaoka. Gentle alkaline "beauty water," Mt. Katsuragi's Fuji-and-Suruga-Bay views, and the Genji history of nearby Hirugakojima.

Seaside city on the Izu Peninsula, an hour from Tokyo by Shinkansen. Coastal sodium chloride springs; fireworks over Sagami Bay in summer.

1200-year-old onsen at the head of the Katsura River in central Izu. Bamboo grove, red bridges, the historic Shuzenji temple complex.

Quiet Kanagawa onsen in the foothills of the Hakone outer rim, on the Manyōshū-era list of historic baths. Plum blossoms in February.