Visit Us
Current Hours & Admissions
Blue Star Museum & Museums for all Programs
Fall through Spring Hours are in effect.
Our hours during Saturday - Sunday from 1 pm - 5 pm. (Unless otherwise noted)
You can view our upcoming Calendar of Events on our Events Page:
https://longislandexplorium.org/events/
$5 per person
Members and children under 1 are free
Port Jefferson Library card holders - $1 off each admission ticket
Become a Member
Join now and unlock endless fun and learning opportunities while supporting our nonprofit mission to inspire a love of learning in children. With discounts and members-only perks, our membership is the key to unlocking the full potential of our children's museum. Become a member today and make a difference in your community!
FREE for active-duty military personnel and their family members within the same household* (Proud to be a Blue Star Museum)
FREE for SNAP/EBT cardholders and family members within their household.
Talk to one of our staff to obtain an annual membership.
The Long Island Explorium is housed in the beautiful historic Chandlery Building in Port Jefferson Village. The building was built in the 1890s and served as the chandlery, a store that sold nautical gear, candles, rope, sail repair kits, and all other equipment a ship would need for a long voyage.
We hope you will enjoy visiting our little gem of a children's museum. We welcome your feedback and comments as we work towards ensuring that our guests have an enjoyable and safe experience.
Quick Guide: What to Know Before You Go
- Masks are recommended but optional for all visitors during their visit.
- If you are not feeling well, please stay home.
- Enhanced sanitation measures have been added.
- Reservations are required for private group sessions. Contact us for booking. Private Session is not a drop-off program. An adult from your group must be present. Book your requested date 4 days in advance.
We will always err on the side of safety and realize that ALL risk cannot be eliminated from visiting the Explorium. We have worked very hard to reopen and operate in a responsible manner and ask for your support in following the health and safety guidelines that we have implemented.
- Stay home if you are not feeling well.
- Visit our Events page and reserve your date
- Masks are recommended but optional for all visitors during their visit.
- Use the sanitizers provided at the START of your visit.
- Wash your hands often, for at least 20 seconds.
- Avoid touching your eyes, nose, and mouth, and be sure to cough/sneeze into your elbow.
- Please be patient – don’t crowd around exhibits. Practice social distancing and remain 6 feet away from others not in your party.
- Follow the signage throughout the Explorium.
- Private Sessions are not drop-off programs, please have an adult present from your group's session.
- Print your event registration confirmation for your visit and bring it with you to the Explorium if you have a private event.
- Be sure to book 2 days in advance of any date you would like to allow for appropriate staffing.
- Limit your handheld belongings that you must bring into the Explorium.
- Come ready to enjoy and experience our well-loved exhibits and activities.
We at the Long Island Explorium are a nonprofit and are grateful for all our generous donors whose support allows us to continue to be mission-driven and committed to ensuring equal access to high-quality STEM programming to students of all needs and abilities.
Please consider making a gift that will make a difference.
VIRTUAL TOUR of the Long Island Explorium
Get a little sneak peek of the Explorium with our new 360 tour of the Long Island Explorium.
Mailing Address
Long Island Explorium
P.O. Box 465
Port Jefferson, NY 11777
Physical Address
At Port Jeff Harbor
101 East Broadway
Port Jefferson, NY 11777
