Organization: National Park ServiceLocation: 1849 C St NWWashington, DC, 20240United StatesSee map: Google MapsPhone:202-208-6843 2025 Free Entrance Days in the National ParksDates: 06/19/202508/04/202509/27/2025Show more datesHide these dates11/11/2025Time: See website for details. Alice Austen House - New York Amagansett Free Library - New York American Airpower Museum Amityville Public Library - New York Ancient Order of Hibernians- Huntington, NY Bay Shore - Brightwaters Public Library Bayport-Blue Point Public Library - New York Organization: Location: 301 Main StreetCold Spring Harbor, NY, 11724United StatesSee map: Google MapsPhone:631-367-3418 Beyond the Book: Ship AblazeDates: 06/25/2025Time: 6:30 PM - 8:00 PM Organization: Location: 301 Main StreetCold Spring Harbor, NY, 11724United StatesSee map: Google MapsPhone:631-367-3418 Beyond the Book: SoundingsDates: 05/21/2025Time: 6:30 PM - 8:00 PM Brentwood Public Library -Brentwood NY Brookhaven Free Library - New York Center Moriches Free Public Library - New York Central Islip Public Library - New York Cold Spring Harbor Library - New York Commack Public Library - New York Comsewogue Public Library Copiague Memorial Public Library - New York Cradle of Aviation Museum Organization: Location: 301 Main StreetCold Spring Harbor, NY, 11724United StatesSee map: Google MapsPhone:631-367-3418 Crafts & Cocktails: Felted TurtleDates: 05/08/2025Time: 6:30 PM - 8:00 PM Cutchogue New Suffolk Free Library - New York Deer Park Public Library - New York DIGIVATIONS CAMP DEMIGOD INSTITUTE at Cornell University East Hampton Library - New York East Islip Public Library - New York East Northport Public Library - New York EduRaptor - Personalized Online Learning for K-12 Elwood Public Library - New York Emma S. Clark Memorial Library - New York EnthuZiastic Inc. Location: FASNY Museum of Firefighting117 Harry Howard Ave.Hudson, NY, 12534United StatesSee map: Google MapsPhone:518-822-1875 FASNY Museum Centennial CelebrationDates: 05/31/2025Time: 10:00 am to 1:00 pm Fire Island Lighthouse Preservation Society Fishers Island Library - New York Garvies Point Museum and Preserve Half Hollow Hills Community Library - Melville Branch NY Half Hollow Hills Community Library - New York Hallockville Museum Farm Organization: Location: 6038 Sound AveRiverhead, NY, 11901United StatesSee map: Google MapsPhone:631-298-5292 Hallockville Museum Farm Fleece & Fiber Festival Dates: 05/17/2025Time: 10:00 am - 4:00 pm Hampton Bays Public Library - New York Hampton Library in Bridgehampton New York Harborfields Public Library - New York Haven Art Studio Heckscher Museum of Art - New York Historical Society of the Massapequas - New York Huntington Public Library - New York Huntington Public Library - Station Branch NY Intrepid Sea, Air & Space Museum Islip Public Library - New York Japan Society John Jermain Memorial Library - New York Lindenhurst Memorial Library - New York Organization: Old Westbury Gardens - New YorkLocation: 71 Old Westbury RdWestbury, NY, 11590United StatesSee map: Google MapsPhone:(516) 333-0048 Long Island Celtic Festival and Highland Games | Old Westbury GardensDates: 08/23/2025Time: 8 am - 5 pm Long Island Traditional Music Association Longwood Public Library - New York Mastics - Moriches - Shirley Community Library NY Mattituck - Laurel Library NY Middle Country Public Library - New York Middle Country Public Library - Selden Branch NY Montauk Library - New York Morris-Jumel Mansion - New York Museum of Jewish Heritage – A Living Memorial to the Holocaust Nassau County Irish Feis and Festival Nassau County Museum of Art Nassau Library System - Baldwin Public Library NY Nassau Library System - East Rockaway Public Library Planting Fields Foundation - New York Queens County Farm Museum Raynham Hall Museum Rogers Mansion - New York Sagamore Hill National Historic Site - New York Sagtikos Manor - New York Shinnecock Indian Nation NY Smithsonian National Museum of the American Indian - George Gustav Heye Center Smithtown Historical Society South Fork Natural History Museum and Nature Center - New York Southampton History Museum The Jewish Museum - New York The Long Island Museum The Rubin Museum of Art - New York The Shelter Island History Center - NY The Ward Melville Heritage Organization The Whaling Museum and Education Center of Cold Spring Harbor United War Veterans Council, Inc. - NYC Vanderbilt Museum - New York Organization: Location: 301 Main StreetCold Spring Harbor, NY, 11724United StatesSee map: Google MapsPhone:631-367-3418 Whales & AlesDates: 06/07/2025Time: 2:00 PM - 5:00 PM 10+ Terrific Transportation Museums in New York State Visiting Lockport Cave & Underground Boat Ride