## 1 Introduction  
### The Documentation Process for Historic Buildings  
The accurate documentation of historic buildings is a complex but essential task. It preserves the history of the object, aids in its conservation, and educates future generations. Based on modern documentation methods, nowadays it is possible to ensure that the architectural and cultural heritage encapsulated in historic buildings is accurately recorded and cherished for years to come. An overview of these documentation methods can be found, for example, in a publication by the Comite International de la Photogrammetrie Architecturale (CIPA) [1]. Modern visualization methods are also an integral part of this. The most widely used technologies are digital photogrammetry and TLS. The use of precision photogrammetry in cultural heritage documentation has been described by [PERSON] et al. [2], and [PERSON]'s experimental archaeological research has been discussed by [PERSON] and [PERSON] [3,4]. TLS has been used in various conservation projects for over 30 years [4,5]. A special case is the documentation of historic buildings. These are the basis for quality restoration and historical building research in general. Producing high-quality 3D documentation of a historic building is a meticulous process that captures the essence, structure, and historical significance of the architecture, and it is the foundation of a quality restoration. As observed by [PERSON] et al., this process is essential for preservation, restoration, and educational purposes, and it ensures that the building's legacy is preserved for future generations [6]. This has been reported on in many scientific publications; good information can be found from researching CIPA's activities or from consulting the work of renowned authors like [PERSON] and [PERSON] [7,8]. Based on the recommendations set out by CIPA and the renowned authors cited here, the general approach outlined in the following steps can be used as a comprehensive method for accurately documenting a historic property. The initial phase involves in-depth historical research. This includes gathering information from archives, libraries, and historical societies. Researchers look for original blueprints, old photographs, maps, and any written records that provide insights into the history of the building, its construction, and any modifications that may have been made over time; [PERSON] has written about historical collections and digitization [9]. Oral histories and previous studies are also valuable sources of information. A detailed site survey is conducted to assess the current state of the building. This involves measuring the dimensions, identifying structural components, and noting any visible damages or alterations. Advanced tools like laser scanners and drones may be used to create accurate 3D models of the building; [PERSON] et al. has written about documentation methods [10], while [PERSON] et al. [11] has written about research on the reconstruction method. This step ensures that every aspect of the building is captured in its present form. Other surveying methods should also be used; for example, geophysical surveys using GPRs (ground penetrating radars) or magnetometers. Organic samples (e.g., parts of the found wooden elements) should also be taken and dated using dendrochronology or C\({}^{14}\) radiocarbon. [PERSON] has written about radiocarbon dating in archaeology [12], while [PERSON] et al. has described documentation methods and the dating of big archaeological areas in Peru [13]. Creating detailed 3D documentations and architectural drawings is a critical component of documentation. These drawings include floor plans, elevations, sections, and details of architectural elements. Modern technology, such as CAD (Computer-Aided Design) software, allows for precise and scalable drawings that can be easily updated and shared. There are many methods for documenting a historical building, and they vary across existing techniques and technologies.