## 1 Introduction  
During recent years, virtual reality (VR) applications have found a wide and prominent purpose in the field of cultural heritage, and have been constantly evolving. The recent improvementsinthe rendering of complex geometry in the real-time environment haveopened the way for using photogrammetry in game engines, which is illustrated by the implementation of the digitally reconstructed 3D models in video games. The prominent, state-of-the-art examples of VR games use photogrammetry to recreate realistic pieces of an environment [1; 2; 3]. When it comes to cultural heritage, photogrammetry can be considered as the best basis for gathering data on real-world objects. Photogrammetry is a well-known image-based modeling method, which enables an accurate and detailed 3D data gathering from overlapping two-dimensional (2D) images [4]. It is widely used in the field of cultural heritage digitization, enabling 3D reconstruction of a wide range of different structures, from the archaeological sites [5; 6] to architectural objects [6; 7; 8], sculptures and statues [9], as well as the museum artefacts with challenging texture and complex shape [10]. Plenty of case studies illustrate the important role of the application of photogrammetry in the restoration, preservation, analysis, maintenance, and promotion of tangible cultural heritage [4; 5; 6; 7; 8; 9; 10]. According to the various studies, photogrammetry has been proved as reliable, low-cost method for a faithful and accurate reconstruction of complex three-dimensional (3D) objects with high surface detail [11; 12]. Even though laser scanners produce a higher level of accuracy, photogrammetry still presents a prevalent reality-based modeling technique, due to its low cost [13]. In the past few years, rapid advances in the field of structure-from-motion (SfM) technology, as well as the progress in the quality and features of photogrammetry 3D modeling software, provide a faster and more accurate automatic process of realistic 3D reconstruction of the cultural heritage objects or sites. Some authors are using semantics as a way to develop a strategy of 3D model simplification and interaction. Namely, [PERSON] et al. [14] discusses loading of existing and dynamic 3D Geo-Information into a fire-fighting VR simulator and also underlined that the semantic knowledge can improve the user experience. [PERSON] et al. [15] showed that semantic approach can enhance the conversion of CAD industrial plant models to VR model in case of large models visualization. During the past years, the synergy of virtual reality (VR) and photogrammetry has become an increasingly prevalent method to present cultural heritage information. Virtual reality applications provide not only simple visualizations but also an immersive and interactive experience of the real-world objects and scenes. This has had a great impact in the field of digital cultural heritage and edutainment [16; 17; 18]. Many case studies have been carried out on the mutual application of photogrammetry and VR, with the focus on the digitalization of cultural heritage and its virtual exploration in an immersive way [19; 20; 21]. Some of the projects aim to provide virtual access and better understanding of cultural values through VR environment, dealing with digitally recreated inaccessible historical places [21], as well as ancient artefacts that no longer exist [22]. Other interesting works used 3D models of architectural objects [23] and historic artefacts [22; 23; 24; 25], obtained through digital photogrammetry for creating virtual museums (VMs), as a key means for cultural heritage documentation and dissemination. The aim of this study was to create and apply a method for creating a VR experience in the context of cultural heritage by developing a workflow for VR applications based on photogrammetric models. The method is applied to the iconostasis of the Serbian Orthodox Cathedral church of [PERSON], located in Sremski Karlovci (Serbia).