Kosai

Kosai lies along Lake Hamana, a brackish lagoon linked to the Pacific Ocean, where low-lying shores meet the broad coastal plain of western Shizuoka. The city occupies a transition between the lake and the Enshū-nada coast, while its western edge approaches Aichi Prefecture. At Arai, the former Tōkaidō post town preserves the Arai Barrier, an Edo-period checkpoint established by the Tokugawa shogunate to control traffic on the highway. Lake Hamana has long supported fisheries and aquaculture, giving local food culture a close connection to its tidal waters. Explore nearby locations to build a fuller picture of Kosai and Lake Hamana.

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