Journal of Sustainable Urban & Regional Development Studies (JSURDS)

Abstract Background and Objective: Mount Sabalan, the second highest peak in Iran (with an elevation of 4,811 meters) and one of the most significant natural features of Ardabil Province, has played a decisive role in the formation of ancient civilizations in the region. Not only is it the tallest peak in northwestern Iran, but it is also considered one of the key centers for the emergence of early civilizations in this area. This study investigates the impact of Sabalan’s unique characteristics—including its water resources (hot springs and the Qarasoo River), fertile volcanic soils, and strategic location—on the spatial distribution patterns of archaeological settlements in Ardabil Province.
Methodology
Data analysis was carried out using Geographic Information Systems (GIS) and comparative methods. The present study employed field surveys, spatial analyses, and archival research to examine 20 significant archaeological sites in Ardabil Province, including Yeri City (Meshginshahr), the archaeological areas of Sarein, and the historical Qahqaha Castle complex.
Findings and Conclusion:  The results show that more than 80% of the archaeological settlements in Ardabil Province are located within a 40-kilometer radius of Mount Sabalan. The fertile soils on the eastern slopes of the mountain played a crucial role in the development of ancient agriculture in the region.The research demonstrates that Sabalan’s natural features—especially access to water resources (the Qarasoo River and hot springs), fertile lands, and natural defensive positioning were key factors in the site selection of ancient settlements. Additionally, evidence suggests that the mountain’s ritual significance also influenced settlement patterns. This study highlights that Sabalan’s environmental conditions significantly contributed not only to the initial attraction of human communities but also tothe continuity and advancement of civilizations in the region.

Abstract Background and Objective: This research presents a comparative study of the historical bridges of Ardabil and Isfahan during the Safavid era, focusing on the influence of each region’s geographical features on the architecture and construction of these bridges. During the Safavid period, both Ardabil and Isfahan were recognized as significant political, cultural, and economic centers of Iran. Bridges of this era, beyond their function as crossings, played a crucial role in enhancing communication, facilitating economic exchanges, and even serving military purposes. The design and construction of these bridges were influenced by geographical, climatic, topographic conditions, and available local resources. In this context, examining how architects and engineers responded to natural challenges reveals the degree of architectural adaptation to the environmental context. The findings of the study indicate that geographical differences have led to variations in the design, construction, and functions of the bridges. Bridges in Ardabil, suited to mountainous conditions and variable rivers, exhibit more robust structures, while bridges in Isfahan, influenced by the urban setting and the Zayandeh Roud River, feature more open, decorative designs with multifunctional roles.
Methodology: The research methodology is descriptive-analytical, and data has been collected through library sources, historical texts, architectural documents, and geographical analyses. The core of this analysis consists of a comparison of design, structural types, materials used, and the functions of the bridges.
Findings and Conclusion:  The main objective of this study is to compare the architecture and structure of prominent historical bridges in Ardabil and Isfahan and to analyze the impact of geographical factors such as climate, topography, and water resources on the formation of their form, materials, and functions. This research aims to identify architectural patterns adapted to environmental conditions through the study of selected examples.