The Carnival Showcase, completed in 1988, stands as a multifunctional architectural achievement in Sasayama, Hyogo Prefecture. Designed by the renowned Kureo General Planning Office, this versatile complex seamlessly integrates indoor sports facilities, exhibition spaces, commercial areas, and a theater hall under one innovative structure. The building exemplifies 1980s design philosophy, prioritizing functional flexibility and public accessibility. Its thoughtful spatial arrangement facilitates diverse activities while maintaining architectural coherence, making it an exemplary model of mixed-use facility design that continues to serve its community with purpose and efficiency.