In the 1990s, the castle was bought, repaired and opened as a five-star hotel Schlosshotel Burg Schlitz (booking.com). If you are not staying at the hotel, then it makes sense to visit this place only by car, since there is nothing special to do here. You can walk in the woods, there are rare trees and abandoned monuments.
After the construction of the castle a large park was planned. Nowadays it looks like a forest. Behind the hotel you can find a chapel (1822) and the fountain with nymphs (1903).
The fountain looks absolutely alien here and there is an explanation. It was designed for the Mosse Palace in Berlin, but the owner of the palace was arrested by the Nazis. The fountain was acquired by the owner of the castle Schlitz and was installed in the park.
Getting there: free parking N 53 42.246 E 12 32.945.