Gamagori Laguna Ten Bosch — Seaside Theme Park & Hot Springs

Laguna Ten Bosch (ラグーナテンボス) is a seaside resort complex in Gamagori combining a theme park (Lagunasia), hot spring facilities, shopping outlets, and marina on the shores of Mikawa Bay. The park emphasizes marine and Mediterranean themes — pastel-colored buildings, flower gardens, boat rides, and seasonal illuminations transforming the grounds into evening light displays. Unlike massive Tokyo theme parks, Lagunasia operates at relaxed scale — 20+ attractions including roller coasters, a Ferris wheel, water rides, and musical shows.

The resort's highlight is the 360° 3D Mapping Show projected onto the central lagoon and surrounding buildings, combining lasers, fireworks, and music into a 15-minute spectacle. The adjacent hot spring complex, Thalasso Therapy Raguna no Yu, offers ocean-view baths using seawater heated and mineral-enhanced for therapeutic bathing.