Superstructure is a specialized skill that focuses on the design and construction of the parts of a building or infrastructure that are above the foundation or underground structures. This includes walls, floors, roofs, bridges, and other structures that support and protect the building or infrastructure. Superstructure engineers use advanced tools and techniques to ensure the safety and stability of these structures, while also meeting the aesthetic and functional needs of the project. It is an essential and complex area of engineering that requires expertise in materials science, physics, and mathematics.