The Dunes Golf Course sat just off I-15, between Tropicana and Flamingo Roads. Some of it's land was used in constructing New York, New York, City Center, and the Bellagio. The course you saw where MGM Grand stands used to be the Tropicana Golf Course. The old Sahara Golf Course is now called the Las Vegas National.
Shadow Creek stands alone at the top of my list here in Las Vegas. If you are interested in playing DragonRidge (Morrish-Druzisky) while in town, PM me.