The Koto Ward Government Building Seismic Retrofit, completed in 2013, represents a significant modernization effort by Takenaka Corporation. Located in Toyo, Koto Ward, Tokyo, this municipal office building underwent comprehensive seismic reinforcement to meet contemporary structural standards while preserving its original form. The project exemplifies the careful balance between maintaining existing architectural identity and implementing necessary safety improvements. The retrofit work demonstrates advanced engineering techniques applied to government infrastructure, ensuring the building's resilience against seismic activity while continuing to serve as an important administrative center for the ward's operations and public services.