Jungwon-gyeong (Chungju) and Bukwon-gyeong (Wonju) were key regional centers in Unified Silla with rich cultural heritage, but modern content development efforts have been limited and have not adequately reflected public perspectives. This study aims to propose sustainable strategies for utilizing these regions’ historical and cultural assets by examining their unique attributes and analyzing public perception via social media text mining. Results show that jointly leveraging the two regions yields synergy, their multi-layered history enables rich storytelling, and their roles as an inland crossroads and a mountain gateway offer a unique network advantage. Online discourse analysis indicates that public interest focuses on the regions’ Unified Silla heritage but also reflects expectations for modern content and tourism. Based on these findings, five strategies are proposed: enhancing historical storytelling, developing linked tourism routes, integrating educational programs, digitizing content, and expanding community participation. The plan aligns with national cultural promotion and balanced regional development initiatives, and suggests a unified cultural brand encompassing both areas. These strategies can revitalize the regions, offering a model for others.