Olesky Castle

The castle has its own ghosts: 

One of them is Adam Zholkevsky, who is in love with the beautiful daughter of one of the owners of the Olesky Castle, Marianna. When his father refused to consent to the marriage, the desperate nobleman, without leaving his place, plunged a knife into his heart. As a suicide, he was thrown into the moat near the walls, so the spirit still wanders in the castle.

Another ghost that even some restorers have noticed is the Black Monk.