sentences:  The city also was home to the Frankism movement in the late 18th and the 19th century.There is also a Lusatian culture excavation site and museum in the city, and ruins of a medieval castle in Olsztyn, approximately from the city centre (see also Trail of the Eagles' Nests).The name of Częstochowa means "Częstoch's place" and comes from a personal name of Częstoch mentioned in the medieval documents also as "Częstobor" and "Częstomir".