Aura (noun)

1. An invisible force or quality that surrounds a person or thing and is thought to indicate their character or power.
2. A distinctive atmosphere or feeling that surrounds a person or thing.

Origin:

Mid 18th century: from latin, "breath, breeze, smell", also used in the sense "characteristic atmosphere".

Examples:

1. The building had an aura of history and mystery.
2. He had an aura of authority and confidence.
3. The painting had an aura of sadness and loneliness.
4. The room had an aura of peace and tranquility.
5. She had an aura of grace and elegance.