Iron+and+Steel

//"The old cast iron buildings died out. I'm not really sure whether the new skyscrapers killed them, or the new aesthetics"// One of the characteristics of architecture is that it has to keep up with the advances of technology and try to never be obsolete. That's what I think happened to iron buildings; when steel came out as a new innovated material, it became the most popular material immediately, leaving iron behind. Nowadays, we can see this happen frequently due to the speed which technology advances.