Nowadays, it boasts a gaming floor of 72,000 sq. Beau Rivage Casino at a GlanceĪt the time of its opening in March 1999, Beau Rivage was the largest US casino outside the casinos in Las Vegas. Its massive building is located on 875 Beach Blvd, right along a few other gambling venues and resorts, but Beau Rivage is the biggest and greatest. So, Beau Rivage Resort & Casino in Biloxi, Mississippi, enjoys a scenic location along the coastline, and it is one of the major sights to witness on the city skyline. However, it is also important to know how to get there. First things first, let’s get started from the casino floor.