Grand Opening Celebration Comes with Fun and  Thorntons is proud to announce the opening of its newest Chicagoland store—and its second location in the Lockport community. The store will open on Friday, May 19 at 6:00 a.m. and is located at 15925 W.159th Street. The company now operates a total of 89 stores in Illinois, 69 of which are in Chicagoland.  Prizes for Guests