Is NY "a pot" or "a salad". Most people prefer a word "salad". There are a lot of nationalities on one place in NY but they live separately with own churches, shops, restaurants, schools.

You can take a subway and to change the part of the world and to stay in NY still. For example you can visit a  neighbourhood which inhabitants can't turn off their airconditionings on Saturday and they have to ask somebody else to do it..