Superstruction
Pronunciation : Su`per*struc"tion
Part of Speech : n.
Definition : 1. The act of superstructing, or building upon.
2. That which id superstructed, or built upon some foundation; an edifice; a superstructure. My own profession hath taught me not to erect new superstructions upon an old ruin. Denham.
Source : Webster's Unabridged Dictionary, 1913