amsterdam, paris, and antwerp: suggestions?

in less than two weeks, i'll be finding myself wandering the streets of amsterdam, paris, and antwerp... is there anything i shouldn't miss in these three lovely locales...

particularly experiences or destinations of the food, art, or fashion variety?

do tell!

i like to keep touristy stuff to a minimum on my holidays, preferring to explore and wander and live like a local as much as possible.

i've been to amsterdam 2x already, but haven't been to paris or antwerp at all...i've got about a week in amsterdam, 3-4 days in paris, and 2-3 days in antwerp.