The Winzer castle ruin, also called Burg Oberwinzer, is the open-air ruin of a summit castle on a 347.6 m above sea level. NN high hill, the so-called "Schlossberg", above the market winery in the district Deggendorf in Lower Bavaria.
Nice crisp ascent to the ruin from Passauerstrasse up via Burgweg or Friedhofsstrasse. A visit to the castle ruins is definitely worth it, the view when the weather is nice is definitely worth it.