The 37th Annual Coney Island Mermaid Parade was held Jun 22 in 2019. The Parade held annually in Coney Island, Brooklyn, New York, is the largest art parade in the United States. It is held each year in June, regardless of weather, to celebrate the arrival of the summer season. (according to Wikipedia)
Coney Island is a New York City neighborhood that features an amusement area that includes rides and attractions. It's not a centrally managed amusement park.