Dare to walk on air above Chicago's streets? 9 unforgettable Windy City thrills await! 
Read more: https://flip.it/D3egba
flip.itDangling 103 Floors Above Chicago and 8 Other Heart-Stopping City AdventuresImagine your heart racing as you step onto the Willis Tower's glass Skydeck, nothing but transparent floor between you and the tiny streets 1,353 feet below. But Chicago's thrills don't stop there. Reflect in a massive metallic bean, cruise between toweri