The structural systems have evolved from mud and wooden skin cover huts to modern buildings and skyscrapers defying gravity. These new constructive systems have been possible by develop and materials with high resistance and versatility. However, regardless of era, the structural systems keep two main components: substructure (foundations) and superstructure (beams and columns). For this Library Assignment, pick an iconic building worldwide, and explain its structural system using course concepts such as materials, foundations, soil resistance, beams, frames, structural behavior, and aesthetics, among others.