I have to attend a meeting in June in downtown Philly and the schedule
indicates I will have an entire weekday with nothing official to do
between the sessions I will be attending.

It's been a long time since I've been up there. I've seen the Liberty
Bell. In fact, in my youth I had relatives living in Philly and made at
least a half dozen visits to the city to see them and the sights.

So, what else is there to see that is unusual, different, compelling?
And can you recommend any lunch or dinner restaurants that are worthwhile?

I'll be limited to public transportation or cabs...taking the train up
there from DC.

Thanks for any interesting suggestions.