The impenetrable fortress of the Central Massif of Bohemia (České středohoří).
To the northwest of Bohemia, on top of a hill near Litoměřice, there are two towers, one is called Bíla (white) and the other Černá (black). They are the remains of a castle that, during the stormy Middle Ages, was the mansion of important families of the nobility and shelter of valuable religious articles. But, even abandoned, it is still popular; in romantic novels attracted by the atmosphere of the ruins. Let it also inspire you ...