In fact, this project was so close to approval that it only came to a halt when the head of Paramount Studios unilaterally canned it. He explained his veto by saying, "I don't want to be the guy that approved [the Enterprise] and then it's a flop and sitting out there in Vegas forever."
The Goddard Group
We're sure some Klingon-speaking Google billionaire would have paid well to blow that up.
Las Vegas eventually did get its own Trek attraction with the opening of the much more modest Star Trek: The Experience in 1998. This attraction eventually closed in 2008, but for one glorious decade, Trek fans could make the pilgrimage to Sin City to genuflect before such cherished artifacts as Whoopi Goldberg's space hat.
Photo courtesy Star Trek: The Experience Photo: HO
And then drink with all the great sorta-racist caricatures of the distant future.