Mandalay Bay is a 43-story luxury resort and casino at the south end of the Las Vegas Strip in Paradise, Nevada. It is owned by Vici Properties and operated by MGM Resorts International. It was developed by Circus Circus Enterprises and completed at a cost of $950 million. It opened on March 2, 1999, on the former site of the Hacienda hotel-casino. MGM acquired Mandalay Bay in 2005, and The Blackstone Group became a co-owner in 2020. Vici acquired MGM's ownership stake in 2022.