By presenting the history of the city of Sinj and his rich sacral heritage, this work emphasizes the development of religious heritage from the XVIII. to the XIX. century. Located in the heart of the Cetina region, Sinj has historically played a key role as a spiritual and cultural center, especially under Venetian rule and after liberation from the Ottomans. The city is known for the Church of Our Lady of Sinj, built in the 18th century in the Baroque style, and for the Franciscan Monastery, which became a center of education and culture. The paper analyzes the impact of historical events, such as the defense of Sinj in 1715, on the development of sacral architecture, and explores how religious buildings have shaped the urban and cultural identity of the city. It also examines the urbanization of Sinj during Venetian rule and the importance of sacral buildings as symbols of resilience and spiritual strength for the local community. Through an overview of significant churches, monasteries, and chapels, the paper highlights the importance of sacral heritage as a key element in preserving the identity and historical legacy of Sinj. This heritage not only bears witness to the city's rich history but also to the continuity of religious life and cultural creativity in the region.