This Master's Thesis focuses on the virtual reconstruction of the Graz Synagogue, which was destroyed. The sacred building located at the Grieskai No. 58 in Graz was built by architect Maximilian Katscher and inaugurated in 1892. During the night of the Pogrom of November 9, 1938 the synagogue was set on fire and over the next few days it was destroyed down to the foundation. In 2000, a new synagogue was erected at the same location. The present thesis provides a brief historical overview of Jewish life in Graz, the life and works of the architect, and the development of the synagogue from first build to its destruction, from forced sale and restitution to building the new synagogue at the same spot. A description of the synagogue's architecture follows, as well as a comparison between the old and the new building. The main focus of the thesis is on the reconstruction of the destroyed synagogue, based on different sources. Primarily the well preserved building plans and schematics for its initial permit applications, historical photographs and post cards enabled a virtual reconstruction, which provides a good impression of how the temple looked like prior to its destruction. The modelling work was performed in ArchiCAD 18, and the subsequent visualizations of the 3D models done in Artlantis 5 rendered photo-realistic images. The thesis can be regarded as part of a higher-level project concerned with the reconstruction of synagogues and will receive further development within this context.