SUPERSTRUCTION

Noun

superstruction (plural superstructions)

The act of superstructing, or building upon.

That which is built on some foundation; an edifice; a superstructure.

Source: Wiktionary

Su`per*struc"tion, n.

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 Edition