## 5 Conclusions and Outlook  
This paper presented the interest and workflow in creating a VR visualization with integrated 360\({}^{\circ}\) panoramic photography of the Kaiserdom in Konigslutter. The combination of these two kinds of media--real-time 3D visualization and HDRI panoramic photography--allows the interactive and immersive potential of the former to complement the high-fidelity and photorealism of the latter. While traditionally these two \"kinds\" of VR have remained separate, it is important to investigate ways of integrating them in order to build experiences that are able to integrate different kinds of data. This is particularly important for those fields, such as heritage, where documentation can take multiple forms, such as photographs, objects, 3D data, or written documents. The future development of the virtual museum, for example, depends on being able to integrate different kinds of data into a virtual space that can be navigated intuitively in virtual reality [28].  
Further applications of the workflow described above can also be envisioned. In another recent project, a recreation of the town of Stade (Lower Saxony) in the year 1620 [12], panoramic photography  
Figure 8: Two views of the Kaiserdom, inside (**A**) and outside (**B**). A third image (**C**) shows an example of the teleportation mechanic in action. Image (**D**) shows an example of a visual clue placed in the virtual world, where a panoramic photo can be viewed.  
Figure 9: View from the same position in the virtual world, with the panorama switched off (**A**) and on (**B**).  
is implemented so that users can jump between the real-time visualization of the town in 1620 and 360\({}^{\circ}\) photos from the modern day. This implementation allows users to directly juxtapose the historic and contemporary city, as an entry point to comparing the historical conditions of the two periods. In particular, this feature could have extra meaning for users who are already familiar with the town, by revealing the perhaps unknown history of certain well-known locations. While real-time 3D visualizations on their own may provide a certain degree of immersion, the integration of different kinds of data in these virtual worlds, such as panoramic photography, can greatly enrich the experience by inviting the user to compare different kinds of visualizations.  
In addition, by taking real-time visualisations beyond being simply static virtual worlds through the integration of different kinds of information, VR becomes much more powerful as a tool for education in museums. Cultural heritage monuments such as the Kaiserdom of Konigslutter are particularly suited to VR exhibition due a substantial existing audience that may be looking for new ways to extend their visitor experience. By extending real-time visualisations through panoramic photography and other kinds of information, VR can come closer to realising its potential as a tool for cultural heritage education.  
[PERSON] and [PERSON] conceived the main research idea about VR; [PERSON] generated the panorama photography; [PERSON] processed all data and developed the VR application; [PERSON] and [PERSON] wrote the manuscript and generated the illustrations. All authors have read and agreed to the published version of the manuscript. This research was supported by HafenCity University Hamburg, Lab for Photogrammetry & Laser Scanning. The authors declare no conflicts of interest.