Società Generale Immobiliare (SGI; English: The General Company of Real Estate) was once the largest real estate and construction company in Italy.
It was founded in Turin in 1862, then relocated to Rome in 1870 with the unification of Italy.
Most of the Vatican's holdings in the company were sold during the late 1960s to the Gulf and Western corporation.
In 1970, Gulf and Western sold a 50% stake in the Paramount lot to SGI.
A possible reference to SGI, by the name of "Internazionale Immobiliare", is featured in The Godfather Part III as part of the protagonist Michael Corleone's efforts to legitimize his fortune.