Building architecture with metal isn't exactly a new concept; as soon as humans learned how to smelt metals, they quickly applied them to the construction of buildings.
For instance, during the Ancient Greek Era, those stone structures would make use of bronze or lead as fixtures to secure the stones, or to create other structures like railings, The big door, or sculptures.
Likewise, moving into the Renaissance Era, a great deal of lead was used for the roofs of cathedrals, and similarly for the gold-plated bronze Altar inside St. Peter's Cathedral in Vatican City.
As for the Industrial Age, various forms of metal buildings became even more prevalent, whether it was Crystal Palace or the Eiffel Tower, and in some eras, constructing buildings out of metal and glass became a symbol of the times.
