The ruins of the castle in Olsztyn near Częstochowa are among the best-known strongholds of the Polish Jura. A cylindrical, 35- meter tall tower catches the eye from afar. It was built of white limestone, and overbuilt with brown bricks, like a mast of the ship floating in the rough sea. Indeed, the castle witnessed many dramatic events, including the assassination of Maciek Borkowic. From the mid-seventeenth century on, it was falling into disrepair. Eventually, it became a tourist attraction, lying on the popular Eagles’ Nests Trail.