A legend from the 16th century says that the young Hrastovec-Count Friderik fell in love with the beautiful Agata from the small mansion of Štralek. Their love was opposed by Friderik’s mother, who accused Agatha of witchcraft while Count Friderik was away at war. Agatha was beheaded, and Frederick had a Black Cross made of black marble erected at the place of execution, as a symbol of unrequited love. The Black Cross still stands today, and the story lives on in many performances.