 The mall gradually began to draw businesses and patrons away from downtown, especially when Burdines left downtown in 1979.The 1950s and 1960s also saw the opening of the Palm Beach Zoo (then known as the Dreher Park Zoo) in 1957 and the South Florida Science Center and Aquarium in 1961.The first shopping plaza in Palm Beach County, the Palm Coast Plaza, opened in 1959 along Dixie Highway near the city's southern boundary.