"De re aedificatoria" is a treatise on architecture written by the Roman architect Vitruvius in the 1st century BCE. It serves as a comprehensive guide to building design, construction techniques, and the principles of architecture. The work emphasizes the importance of functionality, durability, and beauty in structures. The treatise is divided into ten books, covering topics such as materials, temple design, and urban planning. Vitruvius also discusses the relationship between architecture and other disciplines, including geometry and music, highlighting the interconnectedness of knowledge in creating harmonious buildings.