Visit Us Birthday Parties Events

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.


Summer Schedule

Wednesday - 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.


Summer Camp 2019

Jul 08, 2019 12:00AM—Aug 30, 2019 11:59PM

Summer Camp: Project Planet: The Art of Re-imagining a bottle cap is not just a bottle cap.

Aug 19, 2019 9:00AM—Aug 23, 2019 12:00PM

Build A Bug House

Aug 21, 2019 1:00PM—Aug 25, 2019 5:00PM

Long Island Explorium Wednesday, August 21st  - Sunday, August 25th. 1-5pm each day. Build a Bug House.

Summer Camp: Power Up the Planet

Aug 26, 2019 9:00AM—Aug 30, 2019 12:00PM