For example, I know that Silesia used to have (and apparently now has again) vineyards. I'm asking about "actual" vineyards of several hectares, not tiny private hobby projects like on Tynningö, Sweden or Loddin, Germany.
Clarification: Sounds like you are imposing a modern view of "real vineyard" size versus recognition that most actual historical vineyard would have been far more moderate in size (for many reasons). Could you please stipulate a range of vineyard size you are interested in?