Lighthouse is a distinctive residential and office building completed in 1990 in Showa Town, Yamanashi Prefecture. Designed by HEXA and Kunio Kudo, this structure exemplifies the innovative architectural approaches of the early 1990s. The building successfully integrates living and working spaces within a carefully conceived design that reflects the architects' commitment to functional elegance. Its thoughtful composition and spatial organization make it a notable example of contemporary Japanese residential architecture. The project demonstrates how mixed-use buildings can achieve both practical efficiency and aesthetic sophistication. For architecture enthusiasts, Lighthouse offers valuable insights into the design philosophy and technical execution characteristic of this significant period in Japanese architectural development.