Brooklyn's exquisite McCarren Park Pool, built by the Works Progress Administration in 1936 but closed since 1983 (though it hosted some raucous concerts during its empty years) finally reopened on Thursday. One of 11 public swimming pools that opened in New York that summer 76 years ago, it can hold a whopping 6,800 bathers—an outsize swimming hole for an outsize city. In honor of the summer celebration, The Daily Beast has collected vintage photos of more poolside fun in the sun.