Relics in the Neighborhood
If you like Catholic relics, there is a nice collection two blocks from Hallahan High School. The Diocese of Philadelphia Administration Building at 422 North 17th Street has a display in the lobby, which includes relics pertinent to Hallahan High School, like multiple relics of the True Cross and multiple relics of Pious X.
Lobby display of relics at 422 North 17th Street
Explanation by position of relics in triptych display case
Pious X and the True Cross are well-represented.