Milieu (noun)

1. The social environment in which a person lives or works.
2. The physical or cultural surroundings that influence the way a person lives or behaves.

Origin:

From french milieu, from latin medium.

Examples:

1. He was not comfortable in that milieu.
2. The artist was influenced by the milieu of the city.
3. The milieu of the company was very competitive.
4. The milieu of the school was very liberal.
5. The milieu of the forest was peaceful and serene.