Just a FEW links -- doing a search gives you more info than you ever wanted to know!
http://www.citycenter.com/ - visit for a listing of all restaurants, hotels, shops, etc found in this area
an excellent article describing various aspects of City Center : http://www.lasvegassun.com/news/2009/dec/16/water-swirling-spewing-frozen-entertain-visitors-c/
In case you want to live here: http://www2.citycenter.com/luxury_las_vegas_condos/default.aspx