by Aashima 09 Jun 2012, 18:33 ADVERTISEMENT
Designers say the platforms - collectively dubbed The Ledge - have been purposely created to make visitors feel as they are floating above the city. The reward is unobstructed views of Chicago from the building's west side and a heart-stopping (well, duh!) vista of the street and Chicago River below - for those brave enough to look straight down. (not me!) It's like walking on ice.