Beau Rivage is a waterfront casino resort in Biloxi, Mississippi, USA. It is owned and operated by MGM Resorts International. Beau Rivage was rebuilt and re-opened in 2006, a year after Hurricane Katrina. The Beau Rivage hotel is the tallest building in Mississippi. The term 'Beau Rivage' is French for 'beautiful shore'. The Beau Rivage, with 1,740 rooms, opened in March 1999. At that time of its opening, it was the largest hotel/casino in the United States outside of Nevada.