The term "Coney Islands" has been used to refer to various different things over time, so there are several potential synonyms, depending on context. One possible synonym could be "amusement parks," since the original Coney Island in New York was known for its boardwalk attractions and roller coasters. Another option might be "hot dog stands," as Coney Island-style hot dogs are a famous dish from the area. Alternatively, "beaches" could be used as a synonym, since Coney Island is primarily a seaside destination. Whatever synonym one chooses, the phrase "Coney Islands" is likely to evoke images of fun, sun, and relaxation.