On Christmas day, many businesses and attractions in New York City are closed to allow employees to spend time with their families. However, there are still several places that are open and offer festive activities for visitors. Some popular options include visiting the Christmas tree at Rockefeller Center, ice skating at Wollman Rink in Central Park, taking a holiday cruise on the Hudson River, exploring the Christmas markets in Union Square, and attending holiday performances at venues like Radio City Music Hall or Lincoln Center. Additionally, some restaurants may be open for Christmas dinner reservations.