The remains of the Castle can be visited
Putzar Castle

In Boldekow-Putzar in the Vorpommern-Greifswald district, the Putzar Castle Ruin is an ensemble comprising the remains of two historic manor houses. While the Ulrichsbau had already fallen into disrepair by the 18th century, the Joachimsbau served various purposes until the 1970s.
History+
Putzar's earliest mention dates back to 1306, when Dukes Otto I of Pomerania and Heinrich II of Mecklenburg agreed that only a fortified house should be built at this border location. It is unclear whether the Ulrichsbau, begun around 1545 by the Pomeranian Grand Chamberlain Ulrich von Schwerin, was erected on these foundations. After Ulrich's death, his sons Joachim and Ludolf inherited the estate. Between 1577 and 1580, Joachim von Schwerin had the two-story Joachimsbau built in close proximity. This building was inhabited and remodeled several times after the Ludolf line died out, while the Ulrichsbau progressively decayed. In 1753, a third floor was added to the Joachimsbau. In 1785, a tenant had the upper floor of the Ulrichsbau removed, presumably for building materials.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://de.wikipedia.org/wiki/Datei:Putzar_Joachimsbau_Nord.jpg
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 53.7120, 13.6536