Manazuru Onsen

Manazuru Onsen invites bathers to siliceous mineral waters in the small seaside town of Manazuru on the Manazuru Peninsula in Kanagawa Prefecture, a rocky volcanic promontory projecting into Sagami Bay whose geological character—formed by a volcanic intrusion of andesite and basalt distinct from the surrounding Tanzawa sedimentary geology—creates dramatic rocky coves, sea caves, and whale-shaped sea stacks that have made Manazuru one of Kanagawa's most photogenic coastal destinations. The fishing port traditions of Manazuru, whose boats venture into Sagami Bay for amberjack, sea bream, and the seasonal horse mackerel (aji) that defines the town's culinary identity, give the small community a maritime self-sufficiency that contrasts refreshingly with the resort development of the wider Shonan coast. The wild rocky coastline, the Manazuru Shrine's seaside location where sacred shipwreck timbers are enshrined, and the warm mineral waters make Manazuru an unexpectedly dramatic and authentic coastal onsen experience at the far western edge of Kanagawa's developed coastline.