City skyscraper   The Comcast Technology Center (covered by the tree on the left )is 60-floor building, with a height of 1,121 feet (342 m), and is the tallest building in Philadelphia and the Commonwealth of Pennsylvania, the tenth-tallest building in the United States and the tallest outside Manhattan and Chicago. The tower is located one block away from the Comcast Center ( the third from left), the headquarters of Comcast Corporation. The middle is One Liberty Place which was Philadelphia's first skyscraper, now is the third tallest building Next to this building on the right is Two Liberty Place holds the fourth place.