Exterior (noun)

1. The outside or external appearance or surface of something.
2. The outer side or surface of a building or other structure.

Origin:

Late middle english: from latin exterior "outer", comparative of exter "outer".

Examples:

1. The exterior of the building was in need of repair.
2. The exterior walls were made of stone.
3. She admired the elegant exterior of the mansion.
4. The exterior paint color was a light blue.
5. The exterior design of the car was sleek and modern.