To most, the name “Philadelphia” is synonymous with Rocky Balboa, the Liberty Bell, and soft pretzels. But the cradle of American democracy boasts more than its well-known slew of historic landmarks and pop culture references – it is also home to a large number of world class art museums, complete with its very own Avenue des Champs-Élysées leading from City Hall to what is, arguably, the crown jewel in the city’s collection: The Philadelphia Museum …