U.S. TOY-CONSTRUCTIVE PLAYTHINGS-CENTENNIAL, CO Located south of Denver, our store is one block north of County Line Road on Quebec. Store Hours: M-F 9-8, Sat 9-6, Sun 12-5. Our phone number is 303-220-7555. Our address is 8101 South Quebec, Centennial, CO 80112. FAX: 303-779-6873