One of my favorite things to do is visit neighborhoods with a high concentration of immigrants and find authentic food and/or interesting grocery shops. I live in NJ so I've done some exploring in this area but I'd like to plan road trips around "ethnic" neighborhoods in other parts of the country (or local spots I've missed). What are some of your favorite places to visit and/or if you are a recent immigrant yourself where do you go to get an authentic food experience and/or shop for ingredients to make dishes from your country of origin?
Some of my stops have been:
Indian food in Edison/Iselin, NJ
Italian in NJ, Philly, Providence, Manhattan and Staten Island
Korean in Central NJ, Queens and Manhattan
Mexican (Oaxacan) in New Brunswick, NJ
Salvadorean in Elizabeth, NJ
Spanish in Newark, NJ
Russian in Brighton Beach
Some local places I want to visit:
Korean in Palisades Park, NJ (Apparently has the highest concentration of Koreans outside of Korea? Don't know how I haven't been there yet.)
Mitsuwa Japanese Market in NJ
So help me broaden my horizons! What part of the country do you live in and where would you suggest somebody go for an authentic experience of another food culture?