This study explores the relationship between historical identity and contemporary artistic expression through the analysis of two emblematic Sardinian settlements: the ancient inland village of Osidda and the "artist’s village" of Porto Rotondo. Although characterized by different historical backgrounds, one rooted in medieval fabric and the other in 20th-century visionary architecture, both sites share a profound material connection through the use of granite. The research, developed within the "Historical Landscape Protection" course at the University of Cagliari, adopts a methodological approach that moves from analytical knowledge to conservation and revitalization proposals. The chapter specifically examines the monumental heritage of both contexts, identifying the "open works" of Porto Rotondo (such as the Church of San Lorenzo and the Mario Ceroli Theatre) and the episodic yet historical landmarks of Osidda (the Church of Sant’Angelo and the former Ezza Barracks). The final design proposal aims to bridge these two realities by establishing a cultural and artistic "twinning." Key interventions include: For Osidda: The creation of an Art Park and a "mirador" near the Church of Sant’Angelo, integrated with an albergo diffuso (scattered hotel) and a permanent artistic circuit featuring works by Mario Ceroli to emphasize the link with Porto Rotondo. For Porto Rotondo: A critical analysis of urban "buffer zones" and protection constraints aimed at preserving the integrity of the original artistic settlement against contemporary pressures. Ultimately, the study demonstrates how the dialogue between academic research, local institutions, and artistic heritage can generate sustainable development models, transforming vulnerable historical landscapes into interconnected hubs of cultural excellence.