Alfa Romeo Portello Plant
The Alfa Romeo Portello Plant in Portello, Milan, Italy was the first Alfa Romeo factory, and the main factory between 1908 and the 1960s. The factory was closed in 1986 following FIAT's buyout of Alfa Romeo, but all major production had already been transferred 20 years earlier to the Alfa Romeo Arese Plant.
Source: Wikipedia — Alfa Romeo Portello Plant (CC BY-SA 4.0)