Hats Off Day celebrates the impact of the horse industry with a day of free admission to the Lexington-based Kentucky Horse Park. Now in its 19th year, Hats Off Day offers family-friendly activities, starting from 3 to 10 p.m., including horse and pony rides, interactive educational booths, and a Grand Prix show jumping competition. Hats Off Day is the only day of the year when the Kentucky Horse Park admission is free.