The virtual reconstruction of destroyed synagogues in Vienna started in 1998. In the meantime over 20 synagogues in Vienna and the countries of the former Austro-Hungarian Empire were virtually reconstructed. Following this line of reconstructions the current thesis deals with the "virtual reconstruction of the synagogue in Opava", aiming to rebuild the synagogue in form of 3D based computer model. The first part presents a short overview of the City of Opava (Czech Republic) concerning its geographical location and its present political and economical situation. Moreover the thesis focuses on the historical development of the city, beginning at the founding of Opava in the 12th century ending at its cultural peak during the time around 1900, with focus on the development of the Jewish community. Finally, this chapter explains the origin of the Jewish religious community and their memorials in Opava. The second part is primarily about the construction history and the architectural style of the synagogue, which was completed in 1896. The chapter explains the meaning of urban development, the destruction during the November pogrom and the synagogue's use afterwards. On top of this, this chapter gives an overview of the live and work of the architect Jakob Gartner. Based on extensive research, the final chapter presents the sources required for the virtual reconstruction. The following interpretation of these sources explains certain differences between the used plan and image materials. All the effort results in the 3D model. Based on a detailed documentation of the model structure, further research and findings should be supported by using the created project data. In addition to that, this chapter gives a description of the modeling process in ArchiCAD and the rendering program Artlantis. The thesis concludes with the result of the reconstruction, presenting exterior and interior representations of the synagogue.