Treasure Island, also known as the TI, has been around for a while. Located at the north end of the Strip, TI is sandwiched between the Fashion Show Mall and The Mirage Hotel and Casino. It across from The Venetian and Wynn.
Since the remodel a few years back, all of the restaurants and clubs have changed and are much better/higher rated than they used to be. On a recent visit, I noticed that the Christian Audigier club is located where Tangerine used to be. There is everything from high-end steakhouses to Starbucks coffee on-property.
Cirque du Soleil has a show at TI, which is Mystere. There is also the Sirens of TI show, which is free nightly, and headline acts that perform like Bill Cosby and LeAnn Rimes.
I have had a few funny experiences on this property over the years. I have nothing bad to say other than I do not visit often because I am usually across the street at one of the aforementioned casinos. Definitely worth a visit, whether you are staying there or not.