The first city that took metallurgy from "small hand tools and ornaments" to "more or less mass produced weapons or trade goods."

Idk if it actually happened that way anywhere, but I think it'd be cool to live in the first "city of metal." Worship the god of metal. Metal fountains in the square. Metal cups at taverns. And of course soldiers with larger metal weapons and armor.

This is assuming perfect fantasy circumstances like not dying of tuberculosis and getting to insert myself into the revolution as it happens with my time traveler knowledge