Royal Castle was a fast-food restaurant chain that gained popularity in Florida, particularly in the Miami area, starting in 1938. The chain's square burgers were distinctive from other round-burger fast food and were a selling point for their sandwiches. The brand developed some of the modern-day assembly line techniques used in fast food prep, and the square burgers were more practical for cooking and assembly. The company expanded and, post-World War II, became known for its quick service and affordable menu. With their motto, “Fit for a King,” they sold their hamburgers for 15 cents along with the popular beverage Birch Beer.

Records indicate this store at 56th St. and Bullard Parkway in Temple Terrace was built in the early 1960s. Despite its early success, Royal Castle faced challenges in the 1970s with the emergence of larger fast-food chains like McDonald’s and Burger King. In 1975, stockholders voted to liquidate the company. In 1978, Burger King opened a restaurant on this corner and stayed until they moved in 2013. Fountain Shops of Temple Terrace built their strip center here in 2020. Following Royal Castle, Wendy’s, White Castle, and Krystal adopted the square burger concept.

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