The Rivers Casino (originally going to be named the Majestic Star Casino) is a casino in Pittsburgh, Pennsylvania, USA. It is owned by Holdings Acquisition Co. L.P., a joint venture of Walton Street Capital LLC and High Pitt Gaming LP. Located in Pittsburgh's Chateau neighborhood along the Ohio River and adjacent to the Carnegie Science Center, it had its groundbreaking in December 2007 and opened on August 9, 2009. The casino was originally to be built by Don H.