Ohtokuin is a contemporary religious structure completed in 1997, located in the historic Shimoderacho district of Tennoji, Osaka. Designed by architect Takaguchi Yasuyuki and his Zoka Architectural Research Institute, this building represents a thoughtful integration of modern design principles with traditional temple architecture. The structure serves as a sacred space for worship and spiritual practice, demonstrating how contemporary architectural language can honor and complement Japan's rich religious heritage. Its completion in the late twentieth century marks an important example of modern religious architecture that bridges historical context with contemporary aesthetics and functional requirements.