Without hesitation, Rey Rosales declares the view of Chicago is best from Adler Planetarium. So, we all pile into the Mini Cooper to drive southeast through Chicago's famous skyscraper-choked downtown. We pull up at the planetarium psyched to look back across shimmering Lake Michigan's Monroe Harbour to the Windy City's unmistakable skyline. Far left is tall, dark and handsome, 110-storey Willis Tower (the former Sears Tower and formerly the world's tallest building) and far right is Chicago's second-tallest structure, the 100-storey John Hancock building.