The article provides a detailed analysis of the application of 3D printing in architecture, especially in the context of the renovation and reconstruction of historical buildings using water towers as an example. The authors present how 3D printing technology revolutionizes the architectural design process, enabling precise reproduction of complex architectural details, which is extremely important when working with historic buildings. The article discusses the numerous benefits of using 3D printing, such as increased accuracy, cost and time savings, as well as the ability to create complex forms that would be difficult to produce using traditional methods. This technology allows for the faithful reproduction of destroyed or missing architectural elements, which is crucial for maintaining the integrity of historical buildings. It is also emphasized that 3D printing technology not only facilitates the renovation process, but is also becoming an increasingly popular tool among architects. Thanks to this technology, it is possible to more accurately and effectively catalog and preserve cultural heritage objects for future generations. The article concludes with the statement that 3D printing is becoming an indispensable element of modern architectural design, especially in the context of conservation and reconstruction of historical buildings, for example water towers, contributing to their protection.