Sagamore Hill National Historic Site (Oyster Bay): This was the home of President Theodore Roosevelt, and it's full of rich history. You can tour the house, visit the museum, and walk the surrounding nature trails. Sagamore Hill offers a glimpse into Roosevelt’s personal life and his time as one of America’s most beloved presidents.

Vanderbilt Museum and Planetarium (Centerport): This grand estate, once owned by William K. Vanderbilt II, includes a museum filled with marine and natural history exhibits, as well as a beautiful mansion and gardens to tour. The planetarium offers shows for all ages, giving visitors a chance to learn about astronomy and the stars.

Old Field Point Lighthouse (Setauket): For those who love maritime history, the Old Field Point Lighthouse, dating back to 1823, is a beautiful, historic site to visit. It's a great place to take a peaceful walk along the shore and soak in some local history.

The Long Island Maritime Museum (West Sayville): For anyone fascinated by the sea, this museum delves into Long Island’s rich maritime heritage. Visitors can explore exhibits on boatbuilding, shipwrecks, and the shellfish industry, or even take a guided tour of a historic oyster sloop.

The Whaling Museum & Education Center (Cold Spring Harbor): This museum tells the story of Long Island’s whaling history and the importance of the industry to the region. There are engaging exhibits, artifacts from the whaling era, and fun activities for kids.

Three Village Historical Society (Setauket): This historical society offers guided tours and exhibits focused on the region's role during the American Revolution, including the Culper Spy Ring, which was crucial to George Washington’s intelligence efforts. It’s a fascinating visit for history buffs.

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