Miller Brewery, Milwaukee. When the German immigrants began to arrive in the 1840s, they brought with them their passion for the art of beer brewing. And over the next 100 years this heritage made Milwaukee the world’s leading beer producer. While it's no longer the city's major industry, its legacy is everywhere. Reminders of the old beer barons can be seen at the Pabst Mansion, Blatz Building, and Miller Brewery, where over eight million barrels are still produced annually.