The Philadelphia Museum of Art opened in 1876 as part of the country’s centennial celebration. On the 72nd step are the cast footprints where Rocky Balboa raised his arms in triumph. On the backside of this Greek Revival building is the Schuylkill River. It flows 135 miles through Pennsylvania. In the foreground is the Fairmount Water Works. The public utility was built between 1812 and 1815. The original version supplied Philadelphia with fresh water in response to the yellow fever epidemic of the late 1700s.