The Mindbogglers series features stunning imagery from around the world. This beautiful image of Chicago at twilight was painstakingly selected to highlight the spectacular views of the world around us. Made with sturdy cardboard, the 1000 pieces make a large 736 x 584mm (29 x 23in) puzzle! With handy reference images on both the top and bottom of the box for multi-person solving, these great jigsaws will challenge your puzzling skills and enthrall your mind!