theres so much i cant think of specifics
all ill say is definitely go to brooklyn....thats for sure my favorite place to just walk around and people/culture watch
union square park is pretty fun on a weekend night...all kinds of stuff going on like freestyle ciphers, breakdancing battles, soccer juggling circles, etc.
oh and if you take trees, they will go ape shit over there....well at least the people that ive encountered, but maybe they were sheltered. i just remember these 2 guys sniffin my shit (no homo) in full new york accents going "oh shit you got that cali dro!!!...he's got that cali dro!!!".......but dont smoke in central park...lots of undercover cops there looking for drug activity