Philadelphia City Hall was the biggest stonework stack bearing divider working on the planet at the season of its finishing in 1901, remained as the tallest involved working in the United States until 1909, and still is the biggest city corridor in the United States. The building covers 14.26 sections of land, initially contained 634 rooms with more than 1 million square feet of room, and with its pinnacle and statue of William Penn rises an aggregate of 548 feet over the ground.
The development of Philadelphia City Hall started in 1872 and was finished in 1901. The bill accommodating the erection of another city lobby passed both branches of the Pennsylvania State governing body toward the beginning of April 1860, and the voters of Philadelphia chose Penn Square as the site of City Hall on October 11, 1870. The building was outlined in the Second-Empire Mode of French Renaissance Revival compositional style by designer John McArthur, Jr. with the help of Thomas U. Walter, John Ord, and W. Bleddyn Powell.