More details are starting to filter out about the papal visit to Philadelphia in September as Pope Francis' itinerary begins to solidify. 

The pope is expected in Philadelphia to take part in the World Meeting of Families from Sept. 22 to 27. First,  Philadelphia Archbishop Charles Chaput said, he'll visit New York and Washington before coming to Philadelphia for the "big finale."

"For sure I know there is going to be a stadium visit with young people and grandparents" at one of the city's sports venues, Chaput said. "There's going to be a festival of families on the Parkway on Saturday, and there's going to be a Mass at the same venue on the Parkway on Sunday afternoon at three o'clock."

Final decisions on the plans will have to be approved by the Vatican, said Chaput, who will  travel to Rome next month to make his case personally.

The archbishop says the schedule will depend on the pope's stamina since the events will be at the end of a weeklong U.S. visit.