This paper explores the application of advanced geodetic technologies for the precise documentation and preservation of the Tvrđava Grad in Sinj. Two key surveying methods were used in the study: photogrammetry and terrestrial laser scanning (TLS). These methods enable detailed recording of the geometry and structure of objects, creating a digital record that serves as a foundation for further analysis, restoration, and preservation. Photogrammetry is used to create three-dimensional models based on aerial photographs taken by a drone, while TLS allows for precise measurement and modeling of complex structures, including those that are inaccessible or covered by vegetation. The use of these methods resulted in the creation of a comprehensive 3D model of the Tvrđava Grad in Sinj, encompassing both the exterior and interior parts of the site. The research findings demonstrate that the combination of these technologies is highly effective in documenting cultural heritage, especially in cases where high resolution and detail are required. This approach contributes not only to the preservation of cultural assets but also to their accessibility for future research and public use.