Abstract
Seismic reinforcement work was conducted on the main building of the Old Tokyo Science Museum with the priority of preserving the museum function. Minimal alterations were made by tailoring the seismic retrofit measures toward the effective utilization of space. Using such approaches is important for preserving historic structures and for sustaining their form and integrity as well as their historical and cultural values. When conducting seismic retrofits, it is essential to select an appropriate reinforcement strategy, and this strategy should be determined individually for each project.