Abstract
In this paper, we have developed an architectural walkthrough simulation system on a high-definition immersive projection display. This system enables to visualize 3D architectural model created on CG/CAD applications, and to walk through buildings without passing through the walls by physics simulation. Moreover we've set up a guide for geometry data size and texture data size which are processed in real-time. It is possible for architectural designers and clients to review the architectural design in full scale.