This paper explores the potential of applying new technologies, including the Internet of Things (IoT), in the protection and promotion of cultural heritage. The introductory chapter sets the context and emphasises the importance of preserving cultural heritage in a modern, dynamic environment. The second chapter provides an overview of contemporary technologies used in heritage protection, with a special focus on IoT, digital documentation, 3D scanning, virtual and augmented reality and Big Data analytics. The third chapter considers the challenges and opportunities these technologies present, including technical, financial, ethical, and legal aspects. The concluding chapter summarises the key findings of the work, highlights the implications of the research for the future protection of cultural heritage, and suggests directions for further research. This paper aims to demonstrate that the application of new technologies can enable continuous and precise monitoring of the conditions in which artworks and historical artefacts are kept, optimise resources within cultural institutions, and enhance the global visibility and accessibility of cultural heritage.