This study investigates the potential of leveraging traditional historical and cultural values to develop distinctive souvenir products, aiming to contribute to the preservation and promotion of the cultural heritage of the Hung Kings Temple Complex in Phu Tho, Vietnam, while fostering sustainable tourism. Through an analysis of relevant scholarly literature, the cultural significance of the Hung Kings’ heritage, and the current state of souvenir production, this research proposes a framework for designing and developing culturally authentic souvenirs. The findings highlight the importance of integrating local narratives and symbols into product design to enhance the visitor experience, support local economies, and ensure the sustainable management of heritage sites. This paper offers practical implications for heritage managers, policymakers, and tourism stakeholders in developing unique cultural products that resonate with the cultural identity of the destination.