IBM 3D Interaction Accelerator
http://www.research.ibm.com/3dix
Workstation-based interactive 3D software that enables real-time visualization and inspection of large and complex mechanical and architectural CAD models. Web site outlines latest features of this accelerator and provides examples of how this product is being used by customers. A must-see is the Pictures and Animations link, which provides large images you can download of 3D environments. Be sure to check out the Frauen Kirche project by IBM of Germany.