The Weihenstephan Brewery can trace its roots at the Kloster Weihenstephan abbey to 768. The brewery Weihenstephan was licensed  1040 making it the oldest working brewery in the world. Thats over 974 years of brewing beer….  The oldest operating brewery in the United States is Yuengling, which was founded in 1829,  789 years after Weihenstephan.