With more than 5,000 rooms, it was the largest hotel in the world at the time of its opening. Planning began in 1989 for the new MGM Grand.

Kerkorian had previously developed another MGM Grand, opened on the Strip in 1973 and renamed Bally's in 1986. The resort was developed by Kirk Kerkorian through his company, MGM Grand, Inc. It is owned by Vici Properties and operated by MGM Resorts International. The MGM Grand Las Vegas is a hotel and casino located on the Las Vegas Strip in Paradise, Nevada. Four scenarios were modeled: A high cooling load day was simulated for floor and ceiling extracts. The purpose of the CFD study was to support engineers in assessing air flow and thermal comfort. CFD was to be used to insure that there were uniform and comfortable air temperatures throughout the floor level of the atrium and on the second story floors that were open to the atrium. SETTY performed a computational fluid dynamics (CFD) study of the air flow in the atrium and surrounding spaces in order to improve the HVAC design for meeting peak loads in the winter and summer. Scope of work include LEED Credits EAp2 and EAc1. SETTY services include energy modeling for the MGM building and garage.

The second floor is 25 feet height, opens to the atrium and extends to the top of the space. The spaces surrounding the first floor are primarily retail type, and most of them are separated from the atrium by a curtain wall. The conservatory is an 80 foot tall atrium with 13,000 SF of floor area and 16,000 SF of roof, which is entirely covered by a skylight. The MGM conservatory is part of the new hotel and casino project at the National Harbor in Washington, DC. The most anticipated development project in Prince George’s County includes a garage, the main entertainment area, which has a glass-ceiling conservatory, outdoor terrace and 21-story, 300-room hotel tower. The hotel reached capacity 242 nights during its first year of operation and totaled more than 6 million visitors. MGM National Harbor is a premier entertainment destination and the first luxury gaming resort in the Capital Region, employing 3,700 people.

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