SPRINGFIELD ROYAL DINER Eat an old-fashioned hamburger, sip a malt, and jive to �golden oldies� at the Springfield Royal Diner. Visit our fully restored 1955 Mahoney Diner where you can eat, drink, and jive 50s style. All day breakfast, daily specials, homemade pie� a great place to eat and enjoy the memories and fun that were the fifties.