The casino, which offers slots and some dining, originally opened on July 1, 1962, as the first co-owned by Bill and Sam Boyd. Eldorado was one of three casinos owned by Boyd Gaming that remained closed after the state ordered all nonessential businesses to temporariy shutter to slow the spread of COVID-19 in March. sold the 58-year-old casino to DeSimone Gaming for an undisclosed amount of money. HENDERSON - The historic Eldorado Casino on Water Street now has new owners.