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Izu; the Izu Peninsula
A peninsula in eastern Shizuoka Prefecture, southwest of Tokyo, known for hot springs, seaside resorts and coastal scenery. A classic weekend destination from the Tokyo area; the name also covers the offshore Izu Islands (伊豆諸島).
Izu is almost synonymous with hot-spring holidays near Tokyo. Kawabata Yasunari's story 伊豆の踊子 (The Dancing Girl of Izu) made its mountain roads famous.