Featured
Current & Upcoming
Open Play Hours – Jan 17th- 18th
Jan 17, 2026 1:00PM—Jan 18, 2026 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…
View More
HOLIDAY Open Play Hours – Jan 20th
Jan 20, 2026 1:00PM—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…
View More
Open Play Hours – Jan 24th- 25th
Jan 24, 2026 1:00PM—Jan 25, 2026 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…
View More
February Intersession Camp
Feb 16, 2026 9:00AM—Feb 20, 2026 3:00PM
February Intersession Camp Where STEM Adventures Inspire Future Innovators Please contact Erica Pacheco at epacheco@hcdsny.org to inquire about registering. Email to Inquire about Registering Long Island Explorium February Intersession Camp 2026 Hosted at Harbor Country Day School In partnership with the Long Island Explorium The Long Island Explorium is excited to bring its hands on…
View More
July – August 31st Exhibit – Spy Tech from Then to Now
Jul 01, 2026 12:00AM—Aug 31, 2026 11:59PM
Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777
Summer Themes 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. July 1 -…
View More