According to the Huffington Post, archeologists found the oldest known winery in the world last summer in an Armenian cave—they estimate it dates back about 6,000 years. The Armenian production facility is the oldest known complete-cycle winery according to Gregory Areshian of UCLA.
In the cave, archeologists found a shallow basin nearly 3-feet across that drained into a deep vat. The vat is presumably a collection point for pressed grape juice. They also found grape seeds, dried grape skins and vines at the site. They even identified the type of grape used in the wine making process—Vitis vinifera vinifera—a varietal that is still used to this day.
The site was surrounded by graves, so the archeologists are assuming that the wine was used for ceremonial purposes.