Glass Castle accommodates 35 to 40 children, ages 5 to 12. Encourages children to imagine themselves as knights of the Middle Ages. Features clear plastic walls that allow a view of surrounding children in nearby lookouts. Also enhances view for parents and caretakers to keep tabs on children. Configuration includes three-rider Mega Slide, along with two wave slides, curly climbers and stair/step ladders. Overall size is 36 ft. long, 25 ft. wide and 22 ft. high. Install on resilient surface in area measuring about 49 by 37 ft. Other castle configurations and themed play structures are available, as well as picnic tables and site amenities for landscapes and parks. Union Land Inc., San Francisco, Calif.