Utoco Deep Sea Therapy Center and Hotel is a distinctive wellness facility completed in 2006, located in Muroto, Kochi Prefecture. Designed by renowned architect Henri Guédin in collaboration with Fumiko Kaneko and the creative team at Ciel Rouge Création, this innovative structure represents a unique approach to therapeutic architecture. The building integrates spa and hospitality functions within an oceanside setting, reflecting contemporary design philosophy that harmonizes human wellness with natural environments. Its completion marks an important contribution to specialized healthcare facility design in Japan, showcasing international architectural expertise applied to regional contexts.