Walking around Philidelphia

On a recent trip to Pennsylvania, I had a chance to briefly explore Philidelphia.  The day I was there, it happened to be some celebration as taking place in front of the First Bank of the United States. 

Merchants' Exchange Building was kinda strange.  It is a bit boring on the front ,but the back is round.  Or is that the other way round? :)

Independence Hall from the backside (again, really, is this the back?).

Manhole cover in front of the Independence Hall...wait, I mean, to the building's rear...oh never mind.  I thought this would make for an interesting angle of a shot.

Maybe I'll get more time to explore this city and its long history at some later date.