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COVID-19 Survey R-Code & Link

Current Hours & Admissions

Blue Star Museum & Museums for all Programs

Fall/ Winter Hours are in effect and are Saturday - Sunday 1 - 5pm

1:00 PM - 5:00pm
1:00 PM - 5:00pm
Regular Hours Admissions

$5 per person

Members and children under 1 are free
Port Jefferson Library card holders - $1 off each admission ticket

Blue Star Museum
Blue Star Museum

FREE for active-duty military personnel and their family members within the same household* (Proud to be a Blue Star Museum)

$5 $0
Museums for All

FREE for SNAP/EBT cardholders and family members within their household.
Talk to one of our staff to obtain an annual membership.

$60 $0

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 of the other equipment a ship would need for a long voyage.

We want to thank you all for your support during these challenging times. We are moving forward with optimism and excitement as we reset the Explorium with exhibits and programming for all ages.

As 80% of our visitors are children under 12, who are yet to be vaccinated, we will continue to model the behavior that is expected of them. All guests over age 2 to the museum must wear masks indoors. We know that you are supportive of our efforts to keep our children, guests, and staff safe as we welcome our community through our doors again.
We look forward to hearing the laughter and seeing the happy faces of our guests very soon.

We hope that 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

  • Face masks are required for all medically able guests over age 2.
  • We will be operating at 50% capacity for the safety and health of our guests.
  • If you are not feeling well, please stay home.
  • Physical distancing measures will be implemented.
  • Food is not allowed in the museum.
  • 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.
  • Discount available for members only,  use code: Members2021

Reopening Plan


The Long Island Explorium was closed in March 2020 to comply with New York State's efforts to flatten the curve and keep our communities safe. We had continued to inspire and provide enriching virtual STEM programming and activities to our community during our closure.  We are a much reduced staff, working to reimagine the Explorium's future. We are beginning to re-open our doors and your support will allow us to reopen even stronger... prepared to connect and rebuild through imagination, design and innovation.

We at the Long Island Explorium are grateful for all our generous donors whose support allows us 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.

Reopening with Your Safety in Mind

The Explorium will utilize guidance from the Center for Disease Control and Prevention (CDC), World Health Organization (WHO), and New York State to create, implement, monitor, and revise its reopening plan with a focus on:

  • Mandating the use of appropriate Personal Protective Equipment (PPE) by all guests and all staff.
  • Maintaining recommended social distancing protocol.
  • Providing ample facilities for handwashing and the use of sanitizer with an alcohol content of at least 60 percent.
  • Minimizing points of contact that include recurrent handling of objects or touching of surfaces by multiple people and increasing the frequency of cleaning and disinfecting of objects and surfaces that are subject to repeated contact.
  • Establishing safety precautions meeting New York State guidance for reopening.

For more details on our reopening plan, please click here.

For more details on our enhanced cleaning measures, please click here.

Complete your COVID-19 Survey before every visit:

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.

All visitors must complete the screening. Please follow the link via the button to complete the COVID-19 Screening. All visitors must submit a completed COVID-19 Screening within 24 hours of visiting the Long Island Explorium

  • Stay home if you are not feeling well.
  • Visit our Events page and reserve your date
  • Wear a mask. This is required for any visitor over the age of 2. If you cannot wear a mask for health reasons, you are required to wear a face shield. 
  • 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.
  1. Print your event registration confirmation for your visit and bring it with you to the Explorium.
  2. Submit a completed COVID-19 Screening within 24 hours of visiting the Long Island Explorium:
  3. Be sure to book 2 days in advance of any date you would like to allow for appropriate staffing.
  4. Pack a mask or an alternative face covering for yourself and all guests in your group.
  5. Limit your hand held belongings that you must bring into the Explorium.
  6. Remember - no food or drinks allowed in the Explorium.
  7. Come ready to enjoy and experience our well-loved exhibits and activities.

The Long Island Explorium follows guidelines and recommendations from state and county health departments. We expect to adapt, change, or ease these policies as the health conditions change.

Contact Us

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





Events and Exhibits

Field Trips - * New* VIRTUAL fieldtrips

Hands-on Workshops for Young Scientists, Grades Pre-K to 6TH!

Can't get to the Explorium, we'll bring the Explorium to you virtually! Call us to learn more.


Long Island Explorium has an abundance of enriching and impactful experiences for explorers from birth to 6th grade and beyond. There's never a dull moment for any of our visitors!


Long Island Explorium has a variety of programs for families, students, educators, and other explorers. We have been successful in pivoting to an online platform during this pandemic as well.  We can customize any of our programs for your needs.

Birthday Parties

We are thrilled to announce that birthday parties are once again available at the Explorium. The Explorium will be offering both indoor and outdoor styled birthday parties.⠀

Visit our parties page to start your booking.

2022 Maker Faire Long Island, June

Save the Date for next year's annual Long Island Makers Faire 2022, June 11, 2022