New and interactive technologies Technology, especially the Internet of Cultural Things (IoCT), plays an important role in conserving cultural heritage as a powerful tool that connects, through the Internet, people to their vast cultural resources.  A research problem appears in the lack of sufficient use of the capabilities of the Internet of Things (IoT) to achieve interaction with cultural heritage sites. This research aims to develop a methodology for the effective use of (IoT) and smart technologies in enhancing participation, interaction, and conservation on cultural heritage sites. The research prioritizes the selection of appropriate (IoT) technologies, services, principles, and applications. The research follows a theoretical, descriptive, and analytical approach, consisting of four main parts. These sections cover IoT and IoCT, and their relationship with cultural heritage, a case study of the Church of the Holy Archangels Michael and Gabriel in Sarajevo, Bosnia and Herzegovina, and a proposed methodology for benefit of IoCT in conservation on cultural heritage sites. The research focuses on the potential of IoCT in reviving cultural heritage, especially heritage buildings and sites. It is recommended to adopt the best IoCT technologies, services, and applications supported by data science and analysis techniques effectively for conservation on cultural heritage sites.