Cultural heritage is one of the fundamental elements that ensures the historical continuity of societies and strengthens collective identity and a sense of belonging. This heritage is not limited to monumental structures; it also encompasses urban spaces shaped by social practices and the meanings attributed to them over time. The aim of this study is to examine Çark Mesire, which constituted an important part of urban life in the city of Adapazarı (Sakarya), as an example of cultural heritage that has gradually disappeared. The research was conducted using a qualitative methodology and is based on document analysis of local-history sources, archival documents, memoirs, newspapers, and contemporary testimonies. The findings indicate that from the late Ottoman period until the second half of the Republican era, Çark Mesire played a central role in the daily life of Adapazarı as a space for recreation, social interaction, and the formation of urban memory. The site functioned as a public space where different ethnic and religious communities came together, fostering social and cultural interaction. However, processes of industrialization, unplanned urbanization, environmental degradation, and especially destructive earthquakes led to the gradual loss of both the physical structure and cultural functions of Çark Mesire. This study emphasizes the necessity of preserving cultural heritage and sustaining urban memory in the context of urban transformation processes.