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.


Fall Schedule

The museum is now also open 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

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.


Rain Garden Official Ribbon Cutting Ceremony

Jun 06, 2020 12:00AM—11:59PM

Long Island Explorium Saturday, June 6th,   TBD - Garden tours of the Village Center Rain Garden and official Ribbon Cutting Ceremony TBD pm - At the Long Island Explorium

Little Sparks – Session II

Apr 27, 2020 10:30AM—Jun 01, 2020 2:00PM

Spring Break Maker Camp

Apr 06, 2020 9:00AM—Apr 10, 2020 3:00PM

STEM Online Workshops – Week 3

Mar 30, 2020 10:00AM—Apr 03, 2020 3:00PM