Wine Cellar & Tasting Room
Restaurant @ Rio All-Suite Hotel & Casino
There are lots of wine bars in Las Vegas, some old, some (most) new. This one has been around as long as I've been visiting Vegas and it has been consistently solid over the years. The flights feature interesting wines, not run of the mill grocery and liquor store brands. The by the glass pours are always fresh. They either go through enough bottles that you don't have to worry about getting a pour of anything too old to serve or they carefully check open bottles before serving from them. Either way, I've never been served a bad wine here. Very good and friendly service, too.