Closed June 19–22 for Maintenance
Summer Scheduling is in Effect!
The Long Island Explorium is closed on:
Check back here for updated scheduling.
Sep 14, 2025 10:00AM—5:00PM
Port Jefferson Harborfront
Jun 08, 2024 10:00AM—5:00PM
Jun 03, 2023 10:00AM—5:00PM
Jun 08, 2019 10:00AM—5:00PM
