Which Las Vegas casino, owned by MGM and Italian themed, stands on the site of the former Dunes hotel?
MGM Resorts International: MGM Resorts International is a global hospitality and entertainment company operating destination resorts in Las Vegas, Mississippi, New Jersey and Detroit, including Bellagio, MGM Grand, Mandalay Bay and The Mirage. Bellagio (resort):  It is owned and operated by MGM Resorts International and was built on the site of the demolished Dunes hotel and casino.
Bellagio