Focused on the rich historical and material heritage of Western Sicily, this volume provides a comprehensive study of the Archaeological Park of Segesta and its surrounding territory. Through an interdisciplinary framework, the publication examines the urban evolution, architectural monuments, and cultural transformations of the ancient Elymian city from its protohistoric origins through the Hellenistic, Roman, and Medieval periods. Special emphasis is placed on iconic structures such as the Doric temple, the theater, and the sanctuary of Contrada Mango, alongside recent archaeological excavations and landscape surveys. Beyond historical analysis, the contributions highlight modern strategies of site management, conservation, and public enhancement within the framework of Sicilian cultural heritage policy. By integrating field research with heritage protection models, the work highlights Segesta's pivotal role as an economic, political, and cultural node in the Mediterranean, offering key insights for scholars, archaeologists, and heritage professionals alike.