superstructure

noun

1. 1.Any structure built above the top full deck (FM 55-501).
2. 2.Any material structure or edifice built on something else; that which is raised on a foundation or basis.
3. 3.(sometimes figurative) All that part of a building above the basement.
4. 4.The sleepers and fastenings, in distinction from the roadbed.
5. 5.The social sphere of ideology which includes religion, art, politics, law and all traditional values.