The Podium Light Wall is located on the South and North facades of 7 World Trade Center. As people wander on the pavement below a strip of blue light gracefully follows them. This strip of blue light is 7 floors tall and is visible from Freedom Park. The Podium Wall accentuates the individual, and the patterns that are created as many pass by together. Kinecity designed the interactive element of the design for James Carpenter Design Assoc. who were the responsible for the wall as an art piece.
source: information aesthetics