Aria Hotel and Casino is one of the properties in CityCenter, next to the Vdara and the Mandarin Oriental. It is a 4,004 room property, owned by MGM Resorts and built in 2009, is actually two interlocking buildings, semi-circular in shape. The hotel boasts 15 restaraunts as well as a 300,000 sq ft. convention space and a fine art collection.
Source:
Southwest, The American. “Aria Resort and Casino.” Aria - Las Vegas Hotels & Casinos. Accessed January 14, 2021. https://www.americansouthwest.net/nevada/las_vegas/aria.html.