I purchased tickets on this site to make it quicker bc the line was so long. When I got to the entrance I was turned away and told to go to the counter anyway. Then we had to email the voucher and wait even longer. It was expensive for not much and it was too restricted. Poor experience.
Highly recommend purchasing tickets in advance through Viator! The Skydeck experience was incredible!!
Viewing Chicago from the skydeck at Willis Tower was breathtaking. Only from that vantagepoint can you grasp the full scope of the city and its impressive architecture with Lake Michigan as a backdrop. A brief movie was shown before the experience to give tourists some history of Chicago and the Willis Sears Tower. The only downsides to the experience were the somewhat lengthy lines for the elevator and to access/exit the skydeck. Regardless, I highly recommend this tour!