5. Aria Resort and Casino
A luxury resort and a casino in CityCenter, Aria Resort and Casino was opened on 16th December, 2009.
Aria consists of two curved glass and steel highrise towers adjoined at the center.
The largest and tallest structure at CityCenter, Aria is a joint venture between MGM Resorts International and Infinity World Development.
Quoted as “the most technologically advanced hotel ever built" in Popular Mechanics, Aria contains a five start hotel with around 4,004 hotel rooms, 16 restaurants, 10 bars and nightclubs and casino with 150,000 square foot gaming space in it.
It was believed to be the ninth largest hotel in the world with the total number of rooms at the time of its opening.