American Airpower Museum
A museum commemorating the World War Two big iron birds, especially the Republic P-47 "Thunderbolt". Site has good info and photos of WW2 aircraft.
Cradle of Aviation Museum at Mitchel Center
Designed to stimulate and educate the public about Long Island's role in the history and development of aviation and space technology.
Hicksville Gregory Museum
Housed in the historic Heitz Place Courthouse, and dedicated to providing exhibits and a range of science and craft workshops for children and adults.
Long Island Maritime Museum
Preserving Long Island's regional maritime heritage for educational purposes. Information on oysters, shipwrecks and great events.
Museum of Long Island Natural Sciences
A museum dedicated to preserving and interpreting the natural heritage of Long Island.
The Oyster Bay Historical Society
Featuring historical and genealogical maps, photos, artifacts and records, the Society's landmark museum and research library hosts lectures, class trips and guided tours.
The Vanderbilt Museum
Museum and planetarium. Was the residence and museum built for William K. Vanderbilt II, great-grandson of New York's famed railroad and shipping magnate "Commodore" Cornelius Vanderbilt.