The castle is in excellent condition. But not accessible. It is secured with barbed wire and video surveillance. Why? I found the explanation on Wikipedia: The original palace stood on …
Lohe Castle, Polish Zamek Topacz, is a Lower Silesian castle complex just outside Wroclaw. The entire building complex has been lovingly restored and converted into a hotel with an attached vintage car museum.
The palace complex is accessible. Wikipedia: After 1550, the Barons von Reichell owned the estate. In 1713, they had a Baroque manor house, a side wing, and a servants' quarters built south of the existing knight's residence.
There is currently a hotel in the palace, so it is probably not a typical sightseeing facility. There is also a restaurant in the palace. The palace itself can be viewed from the outside, of course, free of charge.