The use of digital tools has become a tremendous aid in the creation of digital, historical reconstructions of architectural projects. While common visualization techniques focus on pre-rendered graphics, it is possible to apply Game Engines for real-time architectural visualization. This article presents the results of different reconstruction case studies, using a variety of design applications and techniques. Specific focus is placed on the use of Building Information Modeling software and on the inherent complexity and limitations in the process of translating an active, evolving model into an environment suitable for use in a real-time system.