@NeilMorepies time to post vanilla for a bit man. Our leader has drew his sword and the vultures are circling, squawking above. You gotta read the signs on GOT to continue the path most antagonistic.
I've been to all the big american cities and Philadelphia is the sketchiest of them all imo just ahead of LA. Just doesn't feel safe even in the city centre, crackheads as far as the eye can see, dodgiest metro system I have ever been on (people...
Sorry mate but my recommendation is "don't". NYC is a dump and the people are generally awful. Chicago isn't much better but it is better. Philadelphia is quite pleasant so unless you have a specific team, go there and check out the Eagles.
my advice is to stay out of manhattan unless you love expensive shopping, dirty districts and the silly sites. Get out into the other 5 boroughs, Brooklyn, Harlem - amazing, Stay as far away from the tourist traps as you can, get the hop on hop...