An upgrade has been completed for the lighting array atop the PECO Building at 2301 Market Street in Center City West. Designed by H2L2 (Harbeson, Hough, Livingston & Larson), the building was completed in 1970, which was soon followed by a number of major high-rise developments in Center City. The tower rises to a total of 27 stories and 384 feet, an an impressive height for its time. While the tower does not feature an outstanding design, it is widely known for its tenant, the PECO Energy Company, which serves customers across the tri-state area and all over the country. However, the tower is best known for its 38-foot-high screen spanning every face on top of the tower, measuring 148 feet across on the north and south façades and 71 feet across the east and west faces. Over the decades, more than 17,500 digital messages have scrolled across the display.