Understanding structures is core to the education of the professional architect and engineer. Using three-dimensional computer generated models, animations, audio narration, and interactive quizzes, this unique product explains the fundamentals of structural behavior and analysis in an easy-to-understand manner. Interactive Structures utilizes a multi-media format that permits users to draw a direct relationship between structural analysis theory and its practical application within existing buildings. This approach is better suited to the skills, disposition and learning needs of architecture, non-engineering and entry-level engineering students. New to this version are the addition of metric measurements and upgraded functionality of quizzes and exercises. Twenty-four building structures designed by renowned architects are also modeled to show the variety of structural types and behavior.