Turning onto Cannon Drive is something akin to approaching Oz. The city fades behind you as Lincoln Park unfolds before your eyes. As you approach the unique building that is the Peggy Notebaert Nature Museum, you are completely transplanted. For a journey like this, you need sunglasses that match the fanciful feeling of exploring their butterfly garden. Enter the Cannon, whimsical in its butterfly shape, but grounded in its Japanese titanium construction.