Current & Upcoming

Open Play Hours – Sept 20-21st

Sep 20, 2025 1:00PM—Sep 21, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours See a list of Upcoming Events Open Play Hours – School Year Hours in Effect Open Play at the Long Island Explorium Join us as we celebrate STEM, Space, Math, and Maker Activities all month long with exhibits, workshops, and special events! Join us for hands-on activities, crafts, and more. Our current General…

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Open Play Hours – Sept 27-28th

Sep 27, 2025 1:00PM—Sep 28, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours See a list of Upcoming Events Open Play Hours – School Year Hours in Effect Open Play at the Long Island Explorium Join us as we celebrate STEM, Space, Math, and Maker Activities all month long with exhibits, workshops, and special events! Join us for hands-on activities, crafts, and more. Our current General…

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Past | Archive

Maker Faire Long Island, September 14th, 2025

Sep 14, 2025 10:00AM—5:00PM

Port Jefferson Harborfront

Summer Open Play Hours – Aug 27th thr Sept 1st

Aug 27, 2025 1:00PM—Sep 01, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Ocean Explorers- Summer Camps 2025

Aug 25, 2025 9:00AM—Aug 29, 2025 3:00PM

Half-Day (9:00 a.m. – 12:00 p.m.) – $400/week, Full Day (9:00 a.m. – 3:00 p.m.) – $575/week or $650/week

Summer Open Play Hours – Aug 20th thr 24th

Aug 20, 2025 1:00PM—Aug 24, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

SnappyXO Robotics Adventure-Summer Camps 2025

Aug 11, 2025 9:00AM—Aug 15, 2025 3:00PM

Summer Open Play Hours – July 30th thr Aug 3rd

Jul 30, 2025 1:00PM—Aug 03, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777