1. Today is the Coney Island Mermaid Parade. The free festival will have wild costumes and floats on display by the sea.
2. The Jazz Age Lawn Party takes over New York this weekend. Put on your 1920s finest and head to Governors Island for the bash.
3. A Harry Potter–inspired afternoon tea is taking place today. The two-hour potions class will be offered throughout the rest of the summer, as well.
For more events, check in with Time Out throughout the day.