Julia Glassworks in Piechowice is an absolute must-see. It’s the only place where the crystal treasures that once made this corner of the Karkonosze Mountains famous are still produced. Of course, the main attraction is touring the facility, where guests can see how glass has been melted in the same way for 150 years. The guides’ fascinating stories about the history of the glassworks and the region are complemented by workshops for children adapted to every age group.