Chicago, USA
The observation deck on the 103 rd floor of the Willis Tower in Chicago features a glass floor. It’s a long way down to the streets below-412 meters to be precise.(Photo/huanqiu.com)
Chicago, USA
The observation deck on the 103 rd floor of the Willis Tower in Chicago features a glass floor. It’s a long way down to the streets below-412 meters to be precise.(Photo/huanqiu.com)