The last stop of the subway in Philly was at the convention center near FDR park. They had prevented us from getting off at it as we were then at the convention center and could possibly get in, I guess.
All week they were checking badges to make sure you can still go to the convention center. The final day they did not though and we accidently stayed on to the convention center (hoyty toyty).
This was also the night we saw LBJ's daughter.