This comprehensive research overview examines the archaeological and epigraphical legacy of the Hoysala Empire in Karnataka, highlighting the dynasty's transition from local chieftains to a major regional power. The text details the UNESCO World Heritage status of the sacred ensembles at Belur, Halebidu, and Somanathapura, while also documenting recent ASI excavations that revealed subterranean Jaina temple structures and unique masonry tools. Significant attention is given to the veeragallu (hero stone) tradition, which immortalized acts of valor such as cattle defense and the ritual loyalty of the elite Garuda bodyguards. Architecturally, the sources explain how the shift to chloritic schist (soapstone) enabled the development of intricate stellate ground plans and highly detailed decorative friezes. Finally, the collection addresses the conservation history of these sites, illustrating how modern preservation efforts and historical inscriptions together provide a window into medieval South Indian social and political life.