<P> At 548 ft ( 167 m ) , including the statue of city founder William Penn atop its tower , City Hall was the tallest habitable building in the world from 1894 to 1908 . It remained the tallest in Pennsylvania until it was surpassed in 1932 by the Gulf Tower in Pittsburgh . It was the tallest in Philadelphia until 1986 when the construction of One Liberty Place surpassed it , ending the informal gentlemen 's agreement that had limited the height of buildings in the city to no higher than the Penn statue . </P>
what is the statue on top of philadelphia city hall
the statue of city founder William Penn