Superstructure (noun)

1. The part of a ship, building, or other structure that is above its foundation or base.
2. A framework or structure built on top of something else.

Origin:

Mid 19th century: from super- "above" + structure.

Examples:

1. The superstructure of the ship was severely damaged in the storm.
2. The building's superstructure is made of steel and glass.
3. The bridge's superstructure was painted in bright colors.
4. The new superstructure will add an extra floor to the building.
5. The engineers are currently working on the superstructure of the skyscraper.