The article focuses on research based on the analysis of anthropometric historical length units, architectural details, and spatial relationships of selected buildings in the area of Banská Štiavnica, the oldest mining town in Slovakia and recognized as a World Heritage Site. The analysis targets the proportional relationships of architectural elements such (portals, windows, etc.), and the spatial layouts of individual buildings. The research findings contribute to the understanding of the cultural and historical context of the region’s and town’s development, including the transfer of influences from other territories related to population migrations and historical circumstances, such as the Tatar or Ottoman invasions. The authors are trying to verify the imported regional influences in the town’s building culture (resulting from two waves of colonization by settlers from present-day Tyrol and Saxony, and builders from northern Italy). Therefore, they seek constructional and typological parallels based on geometry and, in particular, historical length units. The knowledge gained may support the precise restoration of heritage buildings to their most authentic state or serve as inspiration for contemporary architectural design striving to find the most harmonious forms that complement historical environments.