In order to create a systematic conservation and restoration documentation and to be able to fully utilise the tools and technology for it's creation, a wide array of specific skills, experience and knowledge is needed. Digitalisation of the documentation process significantly accelerates the collection of visual content while simultaneously enabling the integration of the results of numerous methods. Digital tools for documenting cultural heritage are a recent phenomenon in the Republic of Croatia, and the application of laser technology represents a big step forward in this field. Access to and the use of 3D computer heritage models opens the way to a wide spectrum of uses and enables new analyzes, studies, interpretations, as well as virtual reconstructions and presentation. This thesis aims to present the way of digital documentation and presentation of wall paintings and engraved drawings, using different methods of documentation on the example of the church of St. Catherine in Vodnjan. The north wall of the church with it's wall paining of St. Apolonia and Mystical Engagement of st. Catherine has been the base for presenting the abilities of the technology to depict the stratigraphy of the historical layers of plaster and wall paintings in great detail with aim to classify it’s areas of damage and present historical construction alterations. Bearing in mind that each technique of documentation has its advantages and disadvantages, this paper will outline the benefits of digital data acquisition and processing in creating a complete and exhaustive archive documentation base based on structural methods such as photogrammetry, 3D laser scanning, and multispectral photography (such as raking light, infrared reflectography and thermal imaging). The above-mentioned structural methods help determine the type and scope of the required treatment on a cultural object, enable the creation of conservation and restoration treatment proposals and provide detailed and clear documentation of the works done. Moreover, traditional structural, geometric documentation techniques will also be presented in this paper, and will be compared to the digital ones.