Visit Us


The Long Island Explorium is housed in the beautiful historic Chandlery Building in Port Jefferson village.  The building was built in the 1890’s 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.

Visitors to the Explorium will enjoy fun and interactive hands-on exhibits all aimed at fostering the understanding and love of STEM.


Physical Location temporarily close during Covid-19


Fall Schedule

Wednesdays 10 AM - 2 PM, starting September 4th

Saturday - Sunday

1:00pm - 5:00pm

(Other times by reservation)


$5 per person

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

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





Field Trips

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


Long Island Explorium has an abundance of maritime experiences for little explorers


Long Island Explorium has a variety of programs for families, students, educators, and other explorers

Birthday Parties

Long Island Explorium has exciting and interactive Birthday Party Packages available.

2020 Maker Faire Long Island

June 8, 2019 Faire was a huge success!  Learn more on our website.


Virtual Summer Camp

Jul 27, 2020 10:00AM—Sep 04, 2020 3:00PM

Virtual Summer Camp – Snappy XO

Jul 27, 2020 10:00AM—Jul 31, 2020 3:00PM

Rain Garden Official Ribbon Cutting Ceremony

Sep 13, 2020

Long Island Explorium Sunday, September 14th,   TBD - Garden tours of the Village Center Rain Garden and official Ribbon Cutting Ceremony TBD pm - At the Long Island Explorium

Virtual Maker Spotlight: P1 Racing League – Andrew Iacona

Jul 11, 2020 2:00PM—3:00PM