Cosmopolitan (adjective)

1. Having a wide-ranging perspective; familiar with and at ease in many cultures and societies.
2. Composed of people from many different countries and cultures.

Origin:

From greek kosmopolitēs "citizen of the world".

Examples:

1. A cosmopolitan city like New York has a diverse population from all over the world.
2. He was a cosmopolitan person, having traveled to many different countries.
3. The menu at this restaurant is cosmopolitan, featuring dishes from all over the world.
4. The cosmopolitan atmosphere of the city made her feel right at home.
5. The cosmopolitan crowd at the party was a mix of people from all over the world.