The National Diet Library New Building stands as a significant modernist structure in Tokyo's Chiyoda Ward. Completed in 1986, this library building represents a collaborative architectural vision developed by MIDO members and architect Junichi Nakata, alongside the renowned Kunio Maekawa Architectural Design Office. Located at 1-10-1 Nagatacho, the structure exemplifies the design principles of post-war Japanese modernism. The building's functional layout and contemporary aesthetic reflect the era's approach to creating efficient public institutions while maintaining architectural distinction. As an important cultural facility supporting Japan's legislative research needs, it demonstrates how institutional buildings can balance practical requirements with thoughtful design considerations.