Trick or Treat at The Heckscher Museum - The Heckscher Museum of Art Date: 10/31/12 Hours: 10am-4pm Ages: All Price: FREE for children in costume (includes family members) Address: 2 Prime Ave. - 631-351-3250 Huntington, NY 11743 heckscher.org Description: Children who visit the Museum in costume on Halloween can participate in hands-on art activities while exploring the exhibitions with their families admission free and will receive a special treat.